Texas Screwworm Tracker

July 17, 2026

Case Count Reportedly Climbs to 39 U.S. Total (38 Texas) — Two New Sheep Cases in Pecos County; TAHC Premises Count Holds at 29

Status check on July 17, 2026 finds Texas Public Radio's running New World screwworm tracker updated July 16, 2026 at 7:00 p.m. CDT to show 39 confirmed U.S. cases (38 Texas, 1 New Mexico in Lea County) — up from the 34 Texas / 35 U.S. figures this tracker adopted July 16. The two most recent additions are sheep in Pecos County, confirmed July 14 — Pecos is already within the confirmed-case list and the 22-county quarantine zone, so no new county was added. Following this tracker's established practice of adopting the higher, more recent, outlet-reported figure pending TAHC confirmation, the working total is adjusted to 38 Texas / 39 U.S. confirmed cases. TAHC's own confirmed-premises count remains unchanged at 29 across 13 Texas counties as of this check, with the most recent Executive Director Orders still dated July 15, 2026 (Pecos County) and July 14, 2026 (Modified orders for Schleicher, Sutton, and Brewster counties) — consistent with the established pattern of national case-count reporting running ahead of TAHC's premises figure. The 22-county quarantine zone — Bandera, Brewster, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. All warm-blooded animals in the zone continue to require TAHC authorization and a movement certificate to leave. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: Texas Public Radio (TPR) / KEDT, TAHC tahc.texas.gov, July 15–17, 2026.

July 16, 2026

TAHC Confirmed Premises Rise to 29 (From 26) — Still 13 Counties; New July 15 EDO for Pecos County; USDA Releases ~400 Million Sterile Flies; Canada Bans Texas Cattle Imports

Status check on July 16, 2026 finds TAHC's website now reports 29 confirmed New World screwworm premises across 13 Texas counties — up from 26 premises at the July 12 check, with the county count unchanged. TAHC issued a new Executive Director Order dated July 15, 2026 for Pecos County — a county already within the 22-county quarantine zone and confirmed-case list, so no new county was added. Case-count reporting from national outlets has not moved past the 34 Texas / 35 U.S. figures already recorded here; Houston Public Media's tracker (recirculated July 12–16) still cites 32 confirmed infestations, trailing this tracker's adopted total, and no outlet in today's check reported a higher national figure. Separately, KSAT reported July 13 that USDA released nearly 400 million sterile flies over Texas as part of the ongoing containment effort, and the Texas Tribune reported July 14 that Texas cattle and other animals are now banned from entering Canada — an expansion of the trade restrictions already in place. The 22-county quarantine zone — Bandera, Brewster, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. All warm-blooded animals in the zone continue to require TAHC authorization and a movement certificate to leave. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: TAHC tahc.texas.gov, KSAT, Texas Tribune, Houston Public Media, Google News RSS, July 12–16, 2026.

July 12, 2026

Case Count Reportedly Climbs to 35 U.S. Total (34 Texas) — New Case a Goat in Crockett County; TAHC Premises Count Unchanged

Status check on July 12, 2026 finds Texas Standard / Texas Public Radio's running New World screwworm tracker updated July 10, 2026 at 6:00 p.m. CDT to show 35 confirmed U.S. cases (34 Texas, 1 New Mexico in Lea County) — up from the 33 Texas / 34 U.S. figures this tracker adopted July 11. The most recent documented infestation is a goat in Crockett County, a county already within the confirmed-case list and the 22-county quarantine zone, so no new county was added. Following this tracker's established practice of adopting the higher, more recent, outlet-reported figure pending TAHC confirmation, the working total is adjusted to 34 Texas / 35 U.S. confirmed cases. TAHC's own confirmed-premises count remains unchanged at 26 across 13 Texas counties as of this check, with the most recent Executive Director Order still dated July 9, 2026 (Brewster County) — consistent with the established pattern of national case-count reporting running ahead of TAHC's premises figure. The 22-county quarantine zone — Bandera, Brewster, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. All warm-blooded animals in the zone continue to require TAHC authorization and a movement certificate to leave. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: Texas Standard / Texas Public Radio (TPR), TAHC tahc.texas.gov, July 10–12, 2026.

July 11, 2026

TAHC Confirmed Premises Rise to 26 (From 24) — Still 13 Counties; No New EDOs; Case-Count Reporting Holds at 33 Texas / 34 U.S.

Status check on July 11, 2026 finds TAHC's website now reports 26 confirmed New World screwworm premises across 13 Texas counties — up from 24 premises at the July 10 check, with the county count unchanged. The most recent Executive Director Order remains dated July 9, 2026, covering Brewster County — the same order recorded in the prior check; no new EDOs have been issued for additional counties. The 22-county quarantine zone — Bandera, Brewster, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. Case-count reporting from national outlets has not moved past the 33 Texas / 34 U.S. figures already recorded here; Houston Public Media's July 7 tracker (recirculated in today's Google News results) still cites 32 confirmed U.S. infestations, trailing this tracker's adopted total, and no outlet in today's check reported a higher national figure. All warm-blooded animals in the zone continue to require TAHC authorization and a movement certificate to leave. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: TAHC tahc.texas.gov, Houston Public Media, Google News RSS, July 9–11, 2026.

July 10, 2026

TPR Tracker Shows Texas Cases Climb to 33 (34 U.S. Total) — First Report Directly Tying a Confirmed Case to Brewster County

Status check on July 10, 2026 finds Texas Public Radio's running New World screwworm tracker updated July 9, 2026 at 8:00 p.m. CDT to show 34 confirmed U.S. cases (33 Texas, 1 New Mexico in Lea County) — up from the 31 Texas / 32 U.S. figures this tracker adopted July 8. Following this tracker's established practice of adopting the higher, more recent, outlet-reported figure pending TAHC confirmation, the working total is adjusted to 33 Texas / 34 U.S. confirmed cases. Significantly, TPR's report is the first to explicitly tie a confirmed case to Brewster County, describing it as the most recent detection and 'the state's largest county by land area' — closing the gap this tracker noted earlier today, when TAHC's new Brewster County Executive Director Order had not yet been linked to a specific case by any outlet. TAHC's own confirmed-premises count remains unchanged at 24 across 13 Texas counties as of this check, consistent with the established pattern of national case-count reporting running ahead of TAHC's premises figure. The 22-county quarantine zone — Bandera, Brewster, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: Texas Public Radio (TPR), TAHC tahc.texas.gov, July 9–10, 2026.

July 10, 2026

TAHC Adds Brewster County — First Big Bend Detection, a Major Geographic Jump; Quarantine Zone Expands to 22 Counties; Premises Rise to 24

Status check on July 10, 2026 finds TAHC issued a new Executive Director Order dated July 9, 2026 for Brewster County — a far West Texas county in the Big Bend region that had not previously appeared in this tracker's quarantine zone or high-risk county list. This is a significant geographic development: Brewster County sits well outside the existing Hill Country / South Texas / Concho Valley cluster (Crockett, Schleicher, Sutton, Terrell, Val Verde, etc.), representing the outbreak's furthest westward jump to date. TAHC's confirmed-premises count rose to 24 (up from 23) across 13 Texas counties (up from 12), directly reflecting the Brewster County addition. The quarantine zone expands from 21 to 22 counties: Bandera, Brewster, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala. This TAHC update was verified directly against tahc.texas.gov's Executive Director Order list, which also confirms the July 8 order (Crockett, Schleicher, Sutton, Terrell, Val Verde) previously recorded. Case-count reporting from national outlets (Texas Public Radio, Yahoo, PBS) holds at 31 Texas / 32 U.S. confirmed cases as of this check — no outlet has yet linked a specific case to the new Brewster County premises, and no outlet reported a higher national total. All warm-blooded animals in the zone require TAHC authorization and a movement certificate to leave. USDA sterile fly dispersal and TAHC surveillance operations continue. Landowners near Big Bend (Brewster, Presidio, Jeff Davis, Terrell counties) should now treat this as an active-risk area and step up inspection of livestock and wildlife for wounds. Sources: TAHC tahc.texas.gov (Executive Director Orders), Texas Public Radio, Google News RSS, July 9–10, 2026.

July 9, 2026

TAHC Issues Fourth Modified EDO (July 8) for Same 5 Counties — Premises Holds at 23 Across 12 Counties; National Coverage Turns to Beef Prices and Pet Safety

Status check on July 9, 2026 finds TAHC has issued a Fourth Modified Executive Director Order dated July 8, 2026, again covering Crockett, Schleicher, Sutton, Terrell, and Val Verde counties — the same five counties named in the July 3 order this tracker previously recorded, now renewed/modified for a fourth time. No new counties were added and TAHC's confirmed-premises count remains unchanged at 23 across 12 Texas counties. Case-count reporting from national outlets holds at the 31 Texas / 32 U.S. figure recorded on July 8; no outlet found in this check reported a higher total. Coverage over the past day has shifted toward downstream impacts rather than new detections: KBTX News 3 (July 8) reported on the outbreak's spread across Texas and its threat to livestock and beef prices, while CBS News (July 8) published pet-owner guidance on spotting screwworm symptoms in dogs and cats as the infestation continues near populated areas. The 21-county quarantine zone — Bandera, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: TAHC tahc.texas.gov, KBTX News 3, CBS News, Google News RSS, July 8–9, 2026.

July 8, 2026

Case Count Reportedly Climbs to 32 U.S. Total; Corpus Christi-Area (Flour Bluff) Report Not Reflected in TAHC's Official County List

Status check on July 8, 2026 finds a cluster of independent national and Texas outlets — Houston Public Media, FOX 7 Austin, San Antonio Express-News, KVUE, CBS 19, AOL, and Yahoo — all reporting July 6–7 that the U.S. total has climbed to 32 confirmed New World screwworm cases, up from the 30 Texas / 31 U.S. figures previously recorded on this tracker. Following this tracker's established practice of adopting the higher, more recent, multi-source-corroborated figure pending TAHC confirmation, the working total is adjusted to 32 U.S. confirmed cases (31 Texas, 1 New Mexico in Lea County). Separately, KRIS 6 News Corpus Christi reported July 5–6 that a hobby farm in the Flour Bluff area of Corpus Christi (Nueces County) took precautionary action following local screwworm concern — Nueces County is not among the 21-county TAHC quarantine zone or the 12 counties with confirmed premises, and this report has not been corroborated by TAHC's official case data as of this check; it is noted here for landowner awareness only, not treated as a confirmed new county. TAHC's own website remains unchanged: 23 confirmed premises across 12 Texas counties, with the most recent Executive Director Order still dated July 3, 2026 (Crockett, Schleicher, Sutton, Terrell, and Val Verde counties) — identical to the prior July 4 check. The 21-county quarantine zone — Bandera, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: Houston Public Media, FOX 7 Austin, San Antonio Express-News, KVUE, CBS 19, KRIS 6 News Corpus Christi, TAHC tahc.texas.gov, July 5–8, 2026.

July 4, 2026

TAHC Reports 23 Confirmed Premises (Up From 22) — Still 12 Counties; New July 3 EDO for Crockett, Schleicher, Sutton, Terrell, Val Verde

Status check on July 4, 2026 finds the TAHC website now reports 23 confirmed New World screwworm premises across 12 Texas counties — up from 22 premises at the prior check, with the county count unchanged. TAHC issued a new Executive Director Order dated July 3, 2026 covering Crockett, Schleicher, Sutton, Terrell, and Val Verde counties, superseding the July 1 order for Crockett, Pecos, and Terrell — all five counties were already within the 21-county quarantine zone, so no new counties were added. Google News RSS results returned this check largely recirculate case-count figures (28–31 U.S. total) already reflected in prior entries on this tracker; no outlet has published a figure higher than the 30 Texas / 31 U.S. total already recorded here. The 21-county quarantine zone — Bandera, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: TAHC tahc.texas.gov, Google News RSS, July 4, 2026.

July 3, 2026

Case Count Reportedly Climbs to 31 U.S. Total; Pecos County Issues Local Movement Restrictions

Status check on July 3, 2026 finds conflicting case-count reporting from July 2 coverage. Yahoo News and FOX 7 Austin both headlined the outbreak 'escalating' in West Texas with confirmed cases reaching 31, while Dallas News (also July 2) put the national total at 29 — consistent with the 28 Texas/29 U.S. figures USA Today reported July 1. Given the higher, more recent figures and the outbreak's established upward trajectory, this tracker adjusts its working total to 31 U.S. confirmed cases (30 Texas, 1 New Mexico in Lea County), pending TAHC confirmation. Separately, the Midland Reporter-Telegram reports Pecos County issued a local order restricting animal movement on July 2 following a confirmed screwworm case in the county — Pecos was already within the 21-county quarantine zone and already counted among TAHC's confirmed-case counties, so this reflects county-level enforcement rather than a new detection location. TAHC's own website remains unchanged: 22 confirmed premises across 12 Texas counties, with the most recent Executive Director Order still dated July 1, 2026 (Crockett, Pecos, and Terrell counties). The 21-county quarantine zone — Bandera, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: Yahoo News, FOX 7 Austin, Dallas News, Midland Reporter-Telegram, TAHC tahc.texas.gov, July 2–3, 2026.

July 2, 2026

TAHC Reports 22 Confirmed Premises (Up From 20) — Still 12 Counties; New July 1 EDO for Crockett, Pecos, Terrell

Status check on July 2, 2026 finds the TAHC website now reports 22 confirmed New World screwworm premises across 12 Texas counties — up from 20 premises at the prior check, with the county count unchanged. TAHC issued a new Executive Director Order dated July 1, 2026 covering Crockett, Pecos, and Terrell counties — all already within the 21-county quarantine zone, so no new counties were added. Texas confirmed case total holds at 29 (30 U.S. total, including 1 New Mexico case in Lea County); no outlet has reported an updated case-count figure since the June 30–July 1 jump to 29. KVUE reports Blanco County — which remains outside the quarantine zone with no confirmed cases — held a community meeting on July 1 to brief residents on protecting livestock as the outbreak continues nearby in Gillespie County. The 21-county quarantine zone — Bandera, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: TAHC tahc.texas.gov, KVUE, Google News RSS, July 2, 2026.

July 1, 2026

Texas Case Count Rises to 29 (30 U.S. Total); Blanco County Issues Precautionary Disaster Declaration

News 4 San Antonio reports (published June 30, updated July 1, 2026) that USDA data now shows 29 confirmed New World screwworm cases across Texas — up from the 25-case figure reported earlier in the day — implying a U.S. total of roughly 30 (29 Texas, 1 New Mexico in Lea County). The increase tracks a rapid climb documented over the prior 48 hours: AGDAILY and CBS Austin reported the U.S. total at 27 confirmed cases (20 active, 7 inactive) as of June 28–29, driven by two new cases in Crockett and Jim Hogg counties. Separately, Blanco County — a Hill Country county north of Gillespie and Kendall that has not had any confirmed cases and is not in the 21-county quarantine zone — issued a local disaster declaration as a precautionary measure. Blanco County Judge Brett Bray said the declaration lets the county move quickly if a case is detected locally and gives commissioners flexibility to use county property for animal disposal if needed; officials noted the nearest confirmed case remains in Harper, Gillespie County. TAHC's own site continues to show 20 confirmed premises across 12 counties with the most recent Executive Director Order dated June 30, 2026 (Uvalde County) — unchanged from the prior check, suggesting the new case total has not yet been reflected in TAHC's premises count. The 21-county quarantine zone — Bandera, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. Sources: News 4 San Antonio, AGDAILY, CBS Austin, TAHC tahc.texas.gov, July 1, 2026.

July 1, 2026

TAHC Reports 20 Confirmed Premises Across 12 Counties — Up From 18/10; New June 30 EDO for Uvalde County

Status check on July 1, 2026 finds the TAHC website now reports 20 confirmed New World screwworm premises across 12 Texas counties — up from 18 premises across 10 counties in the prior check. TAHC issued a new Executive Director Order dated June 30, 2026 specifically for Uvalde County, the most recent order to date. Texas confirmed case total holds at 25 (26 U.S. total, including 1 New Mexico case in Lea County); TAHC's site does not break out which specific counties account for the premises increase. Separately, Medical Daily reported that three of the confirmed Texas cases are now listed as inactive, suggesting some affected animals have recovered or been resolved, while other outlets (Newsradio 95 WXTK) headlined '26 cases in Texas' — that figure appears to conflate the 26-case U.S. total with the 25-case Texas count, as TAHC's own count remains unchanged at 25 Texas confirmed. The 21-county quarantine zone — Bandera, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: TAHC tahc.texas.gov, Medical Daily, Newsradio 95 WXTK, July 1, 2026.

June 30, 2026

Morning Check — No New Cases; U.S. Total Holds at 26 (25 Texas); Congress Urges Stronger Federal Response

Status check on June 30, 2026 finds no new confirmed New World screwworm cases. U.S. total remains at 26 confirmed cases (25 Texas, 1 New Mexico in Lea County). TAHC website continues to report 18 confirmed premises across 10 Texas counties; most recent Executive Director Orders remain dated June 28, 2026 (Second Modified EDO for Crockett, Schleicher, Sutton, Terrell, and Val Verde counties). The 21-county quarantine zone — Bandera, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. In a notable political development, Congressman David Schweikert led a bipartisan congressional letter on June 29 urging stronger federal action on the New World screwworm outbreak. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: TAHC tahc.texas.gov, Google News RSS, June 30, 2026.

June 29, 2026

Morning Check — 18 Confirmed Premises; New June 28 Modified EDO for Crockett, Schleicher, Sutton, Terrell, Val Verde

Status check on June 29, 2026 finds TAHC website now reports 18 confirmed premises across 10 Texas counties — up from 17 premises in the June 28 morning check. Texas confirmed case total remains at 25; U.S. total remains at 26 (25 Texas, 1 New Mexico in Lea County). TAHC Executive Director Modified Orders dated June 28, 2026 were issued for Crockett, Schleicher, Sutton, Terrell, and Val Verde counties — all within the existing 21-county quarantine zone. The 21-county quarantine zone — Bandera, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: TAHC tahc.texas.gov, Google News RSS, June 29, 2026.

June 28, 2026

Morning Check — Status Holds at 25 Texas Confirmed; 26 U.S. Total; No New Cases

Status check finds no new confirmed New World screwworm cases as of the morning of June 28, 2026. U.S. total remains at 26 confirmed cases (25 Texas, 1 New Mexico in Lea County). TAHC website confirms most recent Executive Director Orders remain dated June 26, 2026 — no new EDOs have been issued. The 21-county quarantine zone — Bandera, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala — remains in effect with 17 confirmed premises across 10 Texas counties. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: TAHC tahc.texas.gov, Google News RSS, June 28, 2026.

June 27, 2026

Quarantine Zone Expands to 21 Counties — Jim Hogg, Starr, and Zapata Added per June 26 EDO

TAHC website updated to reflect Executive Director Orders dated June 26, 2026, expanding the New World screwworm quarantine zone from 18 to 21 counties. Jim Hogg, Starr, and Zapata counties were added — all three are deep South Texas border counties in the Rio Grande Valley and South Texas brush country. The full 21-county quarantine zone now includes: Bandera, Coke, Crockett, Edwards, Gillespie, Jim Hogg, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Starr, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zapata, and Zavala. All warm-blooded animals in the zone require TAHC authorization and a movement certificate to leave. Texas confirmed case count remains at 25 cases across 17 premises in 10 counties; U.S. total remains at 26 (25 Texas, 1 New Mexico). Source: TAHC tahc.texas.gov, June 26–27, 2026.

June 27, 2026

Jim Hogg County — First Confirmed Case; Texas at 25; U.S. Total Rises to 26

USDA confirms first New World screwworm case in Jim Hogg County, Texas — a South Texas border county adjacent to Webb County and the Mexican border. This is the 10th confirmed Texas county, pushing the Texas total to 25 confirmed cases and the U.S. total to 26 (25 Texas, 1 New Mexico in Lea County). TAHC now shows 17 confirmed premises across 10 Texas counties, up from 16 premises across 9 counties at the June 26 PM check. Jim Hogg County, located in deep South Texas, had previously declared a county disaster declaration on June 4, 2026 in anticipation of the outbreak. The 18-county quarantine zone — Bandera, Coke, Crockett, Edwards, Gillespie, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect with a Third Modified EDO for Edwards, Sutton, and Val Verde counties dated June 26. Sources: KGNS, KRIS 6 News Corpus Christi, kiiitv.com, June 26–27, 2026.

June 26, 2026

PM Check — 5 New Cases; U.S. Total Reaches 25; Crockett County Reports 4 Cases in One Day

KVUE reports USDA confirmed 5 new New World screwworm cases in Texas on June 26, 2026, bringing the U.S. total to 25 confirmed cases — up from 20 in the morning check. USA Today reports Texas confirmed 6 new cases in a single day as the U.S. reached 25 total, with geographic spread documented in Zavala, Medina, Bandera, and Crockett counties. Crockett County emerged as a single-day hotspot with 4 confirmed cases in one day — the highest single-county single-day count recorded in the outbreak. DTN Progressive Farmer reports Texas livestock producers are now bracing for a potential billion-dollar economic impact as the pace of new cases accelerates. Texas total rises to 24 confirmed cases (25 U.S. total). The 18-county quarantine zone — Bandera, Coke, Crockett, Edwards, Gillespie, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. Sources: KVUE, USA Today, DTN Progressive Farmer, June 26, 2026.

June 26, 2026

Morning Check — U.S. Total Reaches 20 (19 Texas); TAHC Reports 16 Confirmed Premises

KGNS reports Texas now accounts for 19 of 20 confirmed U.S. New World screwworm cases as of June 26, 2026 — up from 18 Texas cases the previous day. FOX 7 Austin confirmed the U.S. total rose to 20 cases as of June 25. TAHC website now shows 16 confirmed premises across 9 Texas counties, up from 14 premises in the prior update. TAHC Executive Director Modified Orders dated June 25, 2026 were issued for Crockett, Schleicher, Sutton, and Val Verde counties — all within the existing 18-county quarantine zone. The 18-county quarantine zone — Bandera, Coke, Crockett, Edwards, Gillespie, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. Sources: KGNS, FOX 7 Austin, TAHC tahc.texas.gov, June 25–26, 2026.

June 25, 2026

Morning Check — U.S. Total Reaches 19 (18 Texas); Quarantine Expands to 18 Counties; Bandera and Medina Added

Morning status check for June 25, 2026. AGDAILY reports the U.S. total climbed to 19 confirmed New World screwworm cases (18 Texas, 1 New Mexico in Lea County) as of June 24, up from 16 the previous day. TAHC website confirms 14 confirmed premises across 9 Texas counties — up from 13 premises and 8 counties. TAHC Executive Director Order dated June 24, 2026 expanded the quarantine zone from 16 to 18 counties by adding Bandera and Medina counties. Full 18-county quarantine zone: Bandera, Coke, Crockett, Edwards, Gillespie, Kerr, Kimble, La Salle, Medina, Pecos, Schleicher, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, and Zavala. All warm-blooded animals in the zone require TAHC authorization and a movement certificate to leave. No additional new cases reported as of June 25 morning. Sources: AGDAILY, TAHC tahc.texas.gov, June 24–25, 2026.

June 24, 2026

Morning Check — No New Cases; Wildlife and Rodents Identified as Potential Vectors; Oklahoma Heightens Protocols

Status check finds no new confirmed New World screwworm cases as of June 24, 2026. U.S. total holds at 16 confirmed cases (15 Texas, 1 New Mexico in Lea County). APHIS updates the official Confirmed Detections dashboard (June 24). Texas Tribune reports Texas officials now believe rodents and other small wildlife may be contributing to screwworm infestations — a significant development for South Texas landowners and deer managers, as wildlife on private land may serve as undetected infection reservoirs. Oklahoma heightens livestock protocols in response to ongoing Texas cases. TAHC confirms 13 premises across 8 Texas counties remain affected; 16-county quarantine zone (Coke, Crockett, Edwards, Gillespie, Kerr, Kimble, La Salle, Pecos, Schleicher, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, Zavala) unchanged. Sources: APHIS aphis.usda.gov, Texas Tribune, The Oklahoman, June 23–24, 2026.

June 23, 2026

Quarantine Zone Expands to 16 Counties — Pecos and Terrell Added per June 22 EO

TAHC Executive Director Orders dated June 22, 2026 added Pecos County and Terrell County to the New World screwworm quarantine zone, expanding it from 14 to 16 counties. The full quarantine zone now includes: Coke, Crockett, Edwards, Gillespie, Kerr, Kimble, La Salle, Pecos, Schleicher, Sutton, Terrell, Tom Green, Uvalde, Val Verde, Webb, and Zavala. All warm-blooded animals in the zone continue to require TAHC authorization and a movement certificate to leave. TAHC reports 13 confirmed premises across 8 confirmed counties. Texas total remains at 15 confirmed cases; U.S. total at 16. Sources: TAHC tahc.texas.gov Executive Director Orders, June 22–23, 2026.

June 23, 2026

U.S. Total Reaches 16 — First Texas Border-County Case Confirmed; Texas at 15

Texas Public Radio reports the U.S. total reaches 16 confirmed New World screwworm cases, with new cases found in two additional Texas counties. Fox5 reports the first confirmed case in a Texas border county (adjacent to the U.S.-Mexico border), reflecting continued spread toward the international boundary. KVUE confirms USDA announced 4 new cases in Texas across the full June 22 reporting period. Texas Farm Bureau reports USDA commits $105M for 40 innovative screwworm response projects. Texas launches a dedicated one-stop screwworm information website for producers. Texas total rises to 15; New Mexico (Lea County) remains at 1. 14-county quarantine zone remains in effect. Sources: Texas Public Radio, Fox5, KVUE, Texas Farm Bureau, StateScoop, June 22–23, 2026.

June 22, 2026

3 New Cases — U.S. Total Rises to 15; Texas Reaches 14; 2 New Cases in Edwards County

USDA confirms three new New World screwworm cases, bringing the U.S. total to 15 confirmed cases (up from 13). Texas total rises to 14 confirmed cases; New Mexico (Lea County) remains at 1. KSAT reports two of the new cases were detected in Edwards County over the prior 24 hours. TAHC Executive Director Orders dated June 21, 2026 also added Crockett County to the quarantine zone, expanding it from 13 to 14 counties: Coke, Crockett, Edwards, Gillespie, Kerr, Kimble, La Salle, Schleicher, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala. USDA sterile fly dispersal and TAHC surveillance operations continue across all zones. Sources: Reuters, KSAT, TAHC tahc.texas.gov, June 21–22, 2026.

June 21, 2026

PM Check — Status Holds at 12 Texas Confirmed; 13 U.S. Total; No New Cases

Afternoon status check finds no new confirmed or suspected New World screwworm cases as of the evening of June 21, 2026. U.S. total remains at 13 confirmed cases (12 Texas, 1 New Mexico in Lea County). Google News RSS feeds show no new articles published since this morning, and TAHC website confirms most recent Executive Director Orders remain dated June 13, 2026. The 13-county quarantine zone — Coke, Edwards, Gillespie, Kerr, Kimble, La Salle, Schleicher, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: TAHC tahc.texas.gov, Google News RSS, June 21, 2026.

June 21, 2026

Morning Check — Status Holds at 12 Texas Confirmed; 13 U.S. Total; No New Cases

Morning status check finds no new confirmed New World screwworm cases as of June 21, 2026. U.S. total remains at 13 confirmed cases (12 Texas, 1 New Mexico in Lea County). TAHC page confirms 10 confirmed premises across 6 Texas counties; most recent Executive Director Orders remain dated June 13, 2026. The 13-county quarantine zone — Coke, Edwards, Gillespie, Kerr, Kimble, La Salle, Schleicher, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: TAHC tahc.texas.gov, Google News RSS, June 21, 2026.

June 20, 2026

Morning Check — Status Holds at 12 Texas Confirmed; 13 U.S. Total; Outbreak Spread Ongoing

Morning status check finds no new confirmed New World screwworm case count reported for June 20, 2026. U.S. total holds at 13 confirmed cases (12 Texas, 1 New Mexico in Lea County). News outlets report the outbreak continues to spread beyond initial containment zones as of June 19–20, though no specific new case number has been officially announced by USDA or TAHC for today. The 13-county quarantine zone — Coke, Edwards, Gillespie, Kerr, Kimble, La Salle, Schleicher, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. TAHC reports 10 confirmed premises across 6 counties; most recent Executive Director Orders dated June 13, 2026. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: TAHC tahc.texas.gov, Google News RSS, June 20, 2026.

June 19, 2026

PM Check — 12th Texas Case Confirmed; U.S. Total Rises to 13; Washington Post Spotlights Federal Response

KGNS reports Texas confirms a 12th New World screwworm case (published 12:28 PM CDT, June 19, 2026), bringing the U.S. total to 13 confirmed cases (12 Texas, 1 New Mexico in Lea County). County location for the new case not yet officially announced by TAHC. The Washington Post publishes a major investigative feature, 'Flesh-eating maggot outbreak puts Trump administration response under scrutiny,' elevating national attention on the federal response. The 13-county quarantine zone — Coke, Edwards, Gillespie, Kerr, Kimble, La Salle, Schleicher, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: KGNS, Washington Post, Google News RSS, June 19, 2026.

June 19, 2026

Morning Check — No New Cases; Texas Secures $150M in Screwworm Mitigation Grants

Status check finds no new confirmed or suspected New World screwworm cases as of the morning of June 19, 2026. U.S. total holds at 12 confirmed cases (11 Texas, 1 New Mexico in Lea County). Texas secures $150 million in New World screwworm mitigation grants directed at Texas research teams — supplementing the $105 million in USDA innovation funding announced June 17 for 40 national response projects. The 13-county quarantine zone — Coke, Edwards, Gillespie, Kerr, Kimble, La Salle, Schleicher, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: Texas Border Business, WOAI, Google News RSS, June 18–19, 2026.

June 18, 2026

Morning Check — No New Cases; Abbott Secures Federal Funds for Inspector Expansion

Status check finds no new confirmed or suspected New World screwworm cases as of June 18, 2026. U.S. total holds at 12 confirmed cases (11 Texas, 1 New Mexico in Lea County). Governor Abbott secures additional federal funding to boost Texas NWS inspection capabilities, expanding the state's capacity to conduct livestock inspections across the quarantine zone. Houston Chronicle reports Texas is actively adding inspectors to strengthen the field response. The 13-county quarantine zone — Coke, Edwards, Gillespie, Kerr, Kimble, La Salle, Schleicher, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: Texas Border Business, Houston Chronicle, Google News RSS, June 17–18, 2026.

June 17, 2026

PM Check — No New Cases; USDA Commits $105M for Screwworm Response; Drones, Dogs, and Fungi to Aid Fight

Afternoon status check finds no new confirmed or suspected New World screwworm cases as of the evening of June 17, 2026. U.S. total holds at 12 confirmed cases (11 Texas, 1 New Mexico in Lea County). USDA announces $105 million in additional federal funding to support 40 innovative screwworm response projects — including novel detection and control methods involving drones, detection dogs, and biological controls such as fungi. Texas also separately secures federal disaster funding for its state response effort. The 13-county Texas quarantine zone — Coke, Edwards, Gillespie, Kerr, Kimble, La Salle, Schleicher, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: San Angelo Live, Google News RSS, June 17, 2026.

June 17, 2026

Morning Check — No New Cases; Michigan Enacts Movement Restrictions; National Response Broadens

Status check finds no new confirmed or suspected New World screwworm cases as of the morning of June 17, 2026. U.S. total holds at 12 confirmed cases (11 Texas, 1 New Mexico in Lea County). Michigan Department of Agriculture and Rural Development (MDARD) announces formal New World screwworm livestock movement restrictions effective June 17 — making Michigan one of the first non-border states to enact formal movement requirements, reflecting the outbreak's growing national footprint. Austin Farm Sanctuary in Travis County announces increased precautionary protocols. The Guardian publishes new national coverage: 'US screwworm cases rise as outbreak spreads.' The 13-county Texas quarantine zone — Coke, Edwards, Gillespie, Kerr, Kimble, La Salle, Schleicher, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: Michigan Farm News, KVUE, The Guardian, Google News RSS, June 17, 2026.

June 16, 2026

PM Check — No New Cases; Federal Focus Shifts to Wildlife; National Media Coverage Expands

Afternoon status check finds no new confirmed or suspected New World screwworm cases as of the evening of June 16, 2026. U.S. total remains at 12 confirmed cases (11 Texas, 1 New Mexico in Lea County). Federal authorities are expanding containment focus to wildlife populations as cases continue to be monitored across Texas. ABC News published a major national feature on the Texas detections, marking broad mainstream media coverage of the outbreak. The 13-county quarantine zone — Coke, Edwards, Gillespie, Kerr, Kimble, La Salle, Schleicher, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: ABC News, BorderReport, 710 KURV, Google News RSS, June 16, 2026.

June 16, 2026

Morning Check — No New Cases; U.S. Total Holds at 12

Twice-daily status check finds no new confirmed or suspected New World screwworm cases as of the morning of June 16, 2026. U.S. total remains at 12 confirmed cases (11 Texas, 1 New Mexico in Lea County). The 13-county quarantine zone — Coke, Edwards, Gillespie, Kerr, Kimble, La Salle, Schleicher, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: Google News RSS, tahc.texas.gov, June 16, 2026.

June 15, 2026

Two New Cases — U.S. Total Rises to 12; Texas Reaches 11 Confirmed

Two additional New World screwworm cases confirmed, bringing the combined U.S. total to 12 as of June 15, 2026 — up from 10 the previous day. Texas total reaches 11 confirmed cases; New Mexico (Lea County) remains at 1. County locations for the new June 15 cases pending official TAHC announcement. The 13-county quarantine zone — Coke, Edwards, Gillespie, Kerr, Kimble, La Salle, Schleicher, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: iHeart, June 15, 2026.

June 14, 2026

PM Check — Schleicher County Added to Quarantine; 13 Counties in Zone; PA Issues Protective Order

Afternoon status check finds no new confirmed cases beyond 9 Texas animals (8 Texas, 1 New Mexico). TAHC Executive Director Orders dated June 13, 2026 added Schleicher County to the quarantine zone, expanding it to 13 counties: Coke, Edwards, Gillespie, Kerr, Kimble, La Salle, Schleicher, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala — up from 12. Pennsylvania issues a precautionary quarantine order for farm animals as additional states implement protective measures in response to the multi-state outbreak. Texas announces a new online screwworm inspector certification course to rapidly expand inspection capacity statewide. USDA sterile fly dispersal and TAHC surveillance operations continue across all quarantine zones. Sources: tahc.texas.gov, Pittsburgh Post-Gazette, KVUE, June 14, 2026.

June 14, 2026

Morning Check — No New Cases; 9 Confirmed Cases Remain

Twice-daily status check finds no new confirmed or suspected New World screwworm cases as of June 14, 2026. U.S. total stands at 9 confirmed cases (8 Texas, 1 New Mexico in Lea County). TAHC reports 10 premises with confirmed cases across 6 Texas counties. The 12-county quarantine zone — Coke, Edwards, Gillespie, Kerr, Kimble, La Salle, Sutton, Tom Green, Uvalde, Val Verde, Webb, and Zavala — remains in effect. Travis County disaster declaration remains active. USDA sterile fly dispersal and TAHC surveillance operations continue. Sources: Google News RSS, tahc.texas.gov, June 14, 2026.

June 13, 2026

9th Texas Case — Tom Green County; Quarantine Expands to 12 Counties; Travis County Declares Disaster

TAHC confirms a 9th New World screwworm case in Tom Green County (San Angelo area), a calf — the first confirmed case in far West Texas, roughly 250 miles northwest of the original South Texas outbreak. The TAHC quarantine zone expands from 10 to 12 counties, adding Coke and Tom Green counties. Travis County (Austin) issues a county-wide disaster declaration in response to the statewide outbreak, the first major urban Texas county to take formal emergency action. Texas total stands at 9 confirmed cases now spanning South Texas, the Hill Country, and West Texas. Sources: TAHC tahc.texas.gov, KEYE, KUT, myfoxzone.com, June 12–13, 2026.

June 12, 2026

7th & 8th Texas Cases Confirmed — U.S. Total Reaches 9

USDA confirms two additional New World screwworm cases in Texas, bringing the Texas total to 8 confirmed cases and the U.S. total to 9 (8 Texas, 1 New Mexico in Lea County). County locations for the June 12 cases pending official TAHC announcement. The existing 10-county quarantine zone remains in effect: Edwards, Gillespie, Kerr, Kimble, La Salle, Sutton, Uvalde, Val Verde, Webb, and Zavala. All warm-blooded animals within the zone continue to require TAHC authorization and a movement certificate to leave. Source: KATV, June 12, 2026.

June 11, 2026

6th Texas Case Confirmed — Edwards County; Quarantine Zone Expands to 10 Counties

USDA confirms a 6th New World screwworm case in Texas, identified as a calf with a castration wound in Edwards County. Texas total now stands at 6 confirmed cases: Zavala (2), La Salle (2), Gillespie (1), Edwards (1). TAHC quarantine zone expands to 10 counties: Edwards, Gillespie, Kerr, Kimble, La Salle, Sutton, Uvalde, Val Verde, Webb, and Zavala — all warm-blooded animals require TAHC authorization and a movement certificate to leave any zone. In a separate development, USDA reverses its earlier restriction on pet dog travel to Mexico. Sources: KGNS, TAHC tahc.texas.gov.

June 10, 2026

5th Texas Case Confirmed — Quarantine Zone Expands to Kerr and Kimble Counties

USDA confirms a 5th screwworm case in Texas (La Salle County), bringing the U.S. total to 6 (5 Texas, 1 New Mexico). TAHC issues Executive Director Orders expanding the quarantine zone to include Kerr and Kimble counties in the Texas Hill Country, joining Zavala, La Salle, Uvalde, Webb, and Gillespie. All warm-blooded animals in quarantine zones require TAHC authorization and an animal movement certificate to leave. The outbreak now spans confirmed cases across South Texas border counties and the Hill Country. Sources: USA Today, KFGO/The Mighty 790, TAHC tahc.texas.gov.

June 9, 2026

PM Check — Gillespie County (Hill Country) Identified as 'West Texas' Case Location

Afternoon data check confirms no new cases since this morning's update. Follow-up reporting identifies the previously described 'West Texas' cases as located in Gillespie County (Fredericksburg area), in the Texas Hill Country — significantly north and east of the original South Texas outbreak zone and approximately 250 miles from Zavala County. Total U.S. confirmed cases remain at 5 (4 Texas: Zavala, La Salle, Gillespie; 1 New Mexico: Lea County). TAHC movement restrictions remain in effect for La Salle, Uvalde, Webb, and Zavala counties. Gillespie County added to high-risk monitoring list. Sources: USA Today, Oklahoma Farm Report, Google News RSS.

June 9, 2026

Spread Beyond Texas — First U.S. Case Outside State; Abbott Escalates Response

USDA confirms the first New World screwworm case outside Texas — a dog in Lea County, New Mexico — marking interstate spread of the outbreak. Total U.S. confirmed cases now stand at 5 (4 Texas, 1 New Mexico). Governor Abbott escalates the Texas state emergency response after additional confirmations. Texas A&M leadership appointed as federal adviser on the outbreak. Cases are now documented more than 300 miles apart across Texas, indicating continued geographic expansion beyond the initial South Texas border region. Sources: USA Today, Texas Tribune, KCBD, Oklahoma Farm Report.

June 8, 2026

Case Count Rises to 4 — West Texas Dog Case Signals Spread Beyond South Texas

USDA confirms two additional New World screwworm cases, bringing the Texas total to 4 confirmed cases. Critically, one new case involves a dog in West Texas — hundreds of miles from the earlier South Texas detections — marking the first confirmed case outside the South Texas border region and indicating broader geographic spread. TAHC expands the infested zone to include La Salle and Webb counties in addition to Zavala and Uvalde. Governor Abbott activates the state emergency response center. USDA states food supply is 'not at risk.' Canada maintains livestock import restrictions on Texas animals. Sources: Reuters, USA Today, CNBC, Oklahoma Farm Report.

June 8, 2026

Morning Check — Status Holding at 2 Confirmed

No new confirmed or suspected New World screwworm cases reported as of early June 8, 2026. Case count remains at 2 confirmed in Zavala County. Infested Zone 01 movement restrictions continue for Zavala and Uvalde counties. USDA sterile fly dispersal and TAHC surveillance operations ongoing across South Texas border counties.

June 7, 2026

No New Cases Detected — Status Holding at 2 Confirmed

USDA and TAHC confirm no additional New World screwworm cases beyond the two confirmed detections in Zavala County. Infested Zone 01 movement restrictions remain in effect for Zavala and Uvalde counties. Sterile fly dispersal and enhanced surveillance continue across South Texas border counties.

June 6, 2026

Second Confirmed Case — Zavala County, Texas

USDA confirms a second New World screwworm case in Zavala County, Texas — a second calf with an infected wound. Confirmed case count now stands at 2. Governor Abbott expanded the state disaster declaration. Canada temporarily restricts livestock imports from Texas. Infested Zone 01 movement restrictions remain in effect for Zavala and Uvalde counties. No additional counties added to the infested zone at this time.

June 5, 2026

No Additional Cases Detected — Containment Holding

USDA confirms no further New World screwworm cases beyond the initial Zavala County detection. Infested Zone 01 movement restrictions remain in effect for Zavala and Uvalde counties. USDA and TAHC continue sterile fly dispersal and enhanced surveillance across South Texas border counties.

June 4, 2026

TAHC Establishes Infested Zone 01 — Movement Restrictions in Effect

Texas Animal Health Commission formalizes Infested Zone 01 covering Zavala and Uvalde counties. All warm-blooded animals within the zone may not move without prior TAHC authorization and inspection. Florida implements import restrictions on animals originating from Texas. National coverage from CNN, Reuters, New York Times, and Houston Chronicle. No additional confirmed cases — still 1 confirmed detection in Zavala County.

June 3, 2026

Zavala County, Texas — CONFIRMED U.S. Case

USDA confirms the first New World screwworm case in the United States in Zavala County, Texas. This is the first confirmed U.S. case since eradication in 1966. TAHC and USDA response teams are on the ground. All Texas landowners — especially in South Texas — should inspect livestock immediately and report any suspicious wounds.

June 3, 2026

South Texas — First Suspected U.S. Case

USDA reports the first suspected New World screwworm case in South Texas. Laboratory samples sent to federal lab in Iowa for confirmation.

June 2026

Coahuila, Mexico — ~25 miles from Texas border

USDA reports confirmed detections in Coahuila, Mexico, the closest yet to the Texas border. TAHC designates six high-risk Texas border counties.

May 2026

Coahuila, Mexico — ~31 miles from Texas border

Confirmed detections move northward into Coahuila. USDA expands sterile fly release zones along the Texas border.

Late 2025

Northern Mexico — Nuevo León and Tamaulipas

Screwworm spreads into northeastern Mexican states bordering Texas. USDA and TAHC begin enhanced surveillance programs.

Mid 2025

Central/Northern Mexico — rapid northward spread

Detections continue northward from Veracruz and Oaxaca into central Mexico. USDA intensifies sterile fly programs.

Early 2025

Southern/Central Mexico — Veracruz, Oaxaca

Screwworm spreads into southern Mexican states after breaking through the containment barrier in Central America.

Late 2024

Chiapas, Mexico — first detection in Mexico

New World screwworm detected in Chiapas, Mexico after breaching the USDA/Mexico sterile fly barrier in Central America.