Home / News / FDA grants EUA for Ivomec to prevent screwworm infestations in cattle 

FDA grants EUA for Ivomec to prevent screwworm infestations in cattle 

Quick Takeaways:  

  • Boehringer Ingelheim announced that the US FDA has issued an Emergency Use Authorization (EUA) for Ivomec (ivermectin) 1% Injection to prevent New World screwworm (NWS) infestations in cattle. 
  • The product is authorized for use at critical risk points, including birth, castration, or wound appearance, marking the first EUA for an OTC preventive against NWS in cattle, where no adequate alternatives exist. 
  • With NWS cases reported in northern Mexico and potential US risk, this move strengthens livestock preparedness, helping protect animal health, food supply, and producer livelihoods from this high-impact parasitic threat. 

Why It Matters? 

The EUA gives producers and vets a vetted, over‑the‑counter preventive option at key intervention points (birth, castration, wounds), strengthening biosecurity plans if New World screwworm encroaches toward US herds. 
For Boehringer Ingelheim, Ivomec’s emergency authorization reinforces its role as a frontline partner in emerging livestock threats, potentially deepening loyalty among cattle producers who must rapidly adapt parasite-control protocols under outbreak pressure.  

Source: PRnewswire  

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