New World screwworm

The U.S. Department of Agriculture and U.S. Customs collaborated on an effort using drones. This joint initiative was implemented to help fight the New World screwworm.

The U.S. will resume cattle imports from Mexico via Agua Prieta, Sonora, after suspending them in May 2025 due to New World Screwworm (NWS) concerns. The reopening depends on Mexico enforcing internal movement controls and adhering to a Joint Action Plan, with phased port openings starting August 24. The move aims to offset U.S. herd shortages and provide economic relief for ranchers.

The U.S. public health system faces a surge in infectious diseases like measles and West Nile virus amid funding cuts and vaccine resistance. Health and Human Services Secretary Robert F. Kennedy Jr. has been criticized for policies and misinformation that may have worsened outbreaks, including hantavirus, cyclospora, and bird flu affecting animals and humans.

The USDA will invest $25 million in a new sterile fly dispersal facility in Arizona to combat New World Screwworm. Agriculture Secretary Brooke Rollins announced this during a visit, joined by Arizona GOP Reps Andy Biggs, Juan Ciscomani, and Eli Crane.

The U.S. Agriculture Department will resume importing cattle from Mexico starting in late August, despite concerns about the New World screwworm. This decision aims to address high beef prices.

The United States government announced a phased reopening of its southern border to Mexican cattle imports, improving supply prospects for Brazilian meatpackers JBS and Marfrig. The decision follows a border closure caused by a New World screwworm outbreak, and shares of the companies rose in response.

The United States is resuming Mexican cattle imports after a two-year suspension caused by concerns over New World screwworm. The reopening could impact beef prices.

The U.S. will resume limited Mexican cattle imports on August 24 after over a year of closure due to New World screwworm concerns. This decision follows tight cattle supplies causing record-high beef prices.

The U.S. is reopening cattle ports at the border with Mexico in a phased approach after they were closed due to a New World screwworm outbreak detected in May.

The U.S. will begin reopening southern cattle ports closed in May due to a New World Screwworm outbreak. The USDA announced a phased reopening, starting with the Douglas, Ariz., port on August 24.

The U.S. will begin a phased reopening of southern cattle ports in August following a May shutdown due to a New World Screwworm outbreak. The USDA announced the Douglas, Ariz., livestock port will reopen on Aug. 24.

The U.S. will begin a phased reopening of southern cattle ports on August 24, following a May closure due to a New World Screwworm outbreak, according to the USDA. The first port to reopen is in Douglas, Arizona.

The United States will resume live cattle imports from Mexico in phases, starting with the Douglas, Arizona port of entry on August 24, 2026, following a 15-month suspension due to a New World screwworm outbreak. Two New Mexico ports will also reopen under a step-by-step review process.

The United States will begin lifting its suspension of Mexican cattle imports starting Aug. 24 at the Douglas, Arizona border crossing, following a year-long ban due to the New World screwworm outbreak in Mexico. Despite the reopening, the parasite has been detected in Texas and New Mexico, with over 30 cases reported, and Mexico continues to face 1,792 active cases across 29 states.

The United States will resume importing Mexican cattle on August 24, ending a suspension caused by the New World screwworm outbreak in Mexico. The suspension was imposed over a year ago due to the pest's spread.

A South Texas lawmaker proposed legislation in 2025 to allow teledoc veterinarian services, but it failed. Vets in Texas, which are outnumbered, now face increased client demands due to New World screwworm detections.

USDA assures the public that the food supply remains safe despite a Cyclospora outbreak and New World screwworm spread. Agriculture Secretary Brooke Rollins emphasized the safety and affordability of the nation’s food supply.

A Texas rancher identified Starr County's first confirmed case of the New World screwworm in a calf, prompting immediate safety measures to contain the parasitic fly's spread and protect livestock and wildlife.

Starr County officials confirmed the first New World Screwworm case in a baby calf located in the western area of the county. The county is collaborating with the Texas Animal Health Commission and other entities to address the issue.

Mexico has been managing a New World screwworm outbreak for over 18 months. The article examines potential lessons the U.S. could adopt to combat the parasite's spread.

The USDA confirmed the first U.S. detection of New World screwworm in decades on June 3, 2026, in a bovine in Zavala County, Texas, indicating the parasite has spread north. The U.S. border remains mostly closed to Mexican live animals amid the crisis.

Canada has suspended animal exports from Texas due to concerns about New World screwworm. The decision follows reports of the parasitic threat to cattle, as seen at the West Auction barn on June 11, 2026.

Beef prices are rising due to drought, low herd sizes, and concerns about the new world screwworm in the United States. Texas business owners express concern that price increases could drive away customers.

Scientists are concerned that current efforts may not contain the new world screwworm spreading into the US. Conservationists in Central America discovered rapidly infected wildlife, indicating the fly's potential spread and signaling long-term containment challenges.

Texas livestock producers are dealing with the spread of the pasture mealybug, which is threatening pastures, hayfields, and forage resources. The mealybug is spreading rapidly across Texas while producers also face the threat of the New World screwworm.

Vets and humane societies warn pet owners in Texas and New Mexico about the spread of New World screwworm, a parasite whose larvae infest open wounds in mammals, including pets and cattle. The parasite reemerged in the U.S. in June after decades of eradication efforts, with over 30 confirmed cases reported. Preventive measures include flea and tick medications, and prompt veterinary care is critical to avoid fatal infections.

32 confirmed New World screwworm infestations have been reported in Texas. The flesh-eating parasite poses a risk to animals, and officials are working to contain the outbreak by monitoring spread patterns, identifying symptoms, and implementing control measures.

The U.S. Department of Agriculture confirmed a new case of New World screwworm in Crockett County, Texas, affecting a domestic sheep, increasing the total confirmed cases to 31.

Ranchers and residents in Texas attended an information session about new infestation zones and surveillance zones in Starr County following a New World screwworm infection in a calf in neighboring Jim Hogg County.

Minnesota is restricting dog and cat imports from states where New World Screwworm has been detected to safeguard pets and livestock. The state is implementing stricter regulations on animals entering from these regions.

The head of the Texas Border Coalition stated that local lawmakers along the Texas border seek improved coordination with federal authorities regarding border barrier infrastructure and the fight against New World screwworm.

Mexican President Claudia Sheinbaum praised a new sterile fly plant in Chiapas, funded by Mexico ($30 million) and the U.S. ($21 million), to combat the New World screwworm. The facility will produce 28 million sterile flies weekly by mid-July, aiming to reduce the parasite population through sterile insect technique. The U.S. pledged an additional $83.8 million to support the effort.

Laredo is taking extra precautions after a New World screwworm case was found in Nuevo Laredo, Mexico. Mayor Victor Treviño has implemented inspections for animal wounds and infestations.

Federal and state agricultural officials confirmed 27 New World screwworm cases in the U.S., leading Texas to impose emergency quarantine orders to halt the parasite's spread in West Texas. A transport ban was issued to prevent further expansion.

A group of moderate U.S. House Democrats, including Reps. Sharice Davids, Gabe Vasquez, and Jim Costa, sent a letter to USDA Secretary Brooke Rollins demanding transparency and additional resources to address a New World screwworm outbreak in Texas and New Mexico. The lawmakers emphasized concerns over the pest's impact on livestock and food prices, while a USDA spokesperson defended the agency's communication efforts.

A new case of New World Screwworm has been confirmed in Jim Hogg County, Texas, in a domestic cattle. This brings the total number of confirmed cases to 26, as reported by the U.S. Department of Agriculture.

Preventing New World screwworm infections in pets is critical for owners in the Southwest border region, according to veterinarian Dr. Rebecca Greenstein, a medical advisor for Rover. The online pet-sitting service group is highlighted as a resource for guidance.

House Democrats, including members of the New Democrat Coalition, demanded the USDA provide more details and allocate resources to address the New World screwworm outbreak in Texas and New Mexico. The lawmakers criticized the Trump administration for insufficient transparency and preparedness, while the USDA defended its communication efforts.

A group of 21 moderate House Democrats, including Reps. Sharice Davids, Gabe Vasquez, and Jim Costa, demanded the USDA provide more details and allocate additional resources to address the New World screwworm outbreak in Texas and New Mexico. The lawmakers criticized the Trump administration for insufficient transparency and urged proactive measures to prevent further spread, while a USDA spokesperson defended the agency's communication efforts.

A group of House Democrats from the New Democrat Coalition questioned USDA Secretary Brooke Rollins about the agency's response to a New World screwworm outbreak in Texas and New Mexico. The lawmakers demanded increased resources and transparency to address the parasitic fly's impact on livestock and food prices, while USDA defended its communication efforts.