Livestock producers are being urged to strengthen surveillance and preparedness measures following the recent detection of New World screwworm (NWS) in Texas, with Zoetis highlighting the importance of rapid response to help minimise production losses and protect herd health.

The parasite, whose larvae feed on the living tissue of warm-blooded animals, poses a significant threat to cattle and other livestock. If left untreated, infestations can lead to severe animal welfare issues, reduced productivity, additional treatment costs and, in some cases, death. The re-emergence of New World screwworm has also raised concerns about potential disruptions to livestock movement and trade.

In guidance published on 4 June, Zoetis encouraged producers to inspect animals regularly, report suspected cases immediately and work closely with their veterinarians to establish response plans before an outbreak occurs. Early detection and rapid intervention are considered critical to limiting the spread of infestations and reducing their economic impact. 

The company also highlighted the importance of prompt wound management, removal of larvae where possible and the use of approved treatment options as part of an integrated response strategy. These measures are designed to protect animal health while reducing production losses associated with delayed diagnosis and treatment. 

The renewed focus on preparedness follows a series of emergency regulatory actions in the United States aimed at expanding treatment options for affected livestock. The U.S. Food and Drug Administration has issued multiple Emergency Use Authorizations for products targeting New World screwworm across several animal species, reflecting the growing urgency of the situation. 

For cattle producers, the economic consequences of an outbreak can extend beyond animal health. Production losses, increased veterinary interventions, movement restrictions and potential trade implications all contribute to the financial risks associated with the parasite. As a result, prevention and preparedness are becoming increasingly important components of herd risk management.

The latest guidance reinforces the value of collaboration between producers, veterinarians and animal health companies in responding quickly to emerging disease threats. For the livestock sector, investing in surveillance and biosecurity remains one of the most effective ways to safeguard productivity and business continuity.

For more information Zoetis official website.