Influenza A Detected in U.S. Cattle Herds

Comprehensive Study Finds Flu Antibodies in Cattle

The University of Missouri has revealed new insights into the prevalence of influenza A in U.S. cattle, following a comprehensive study that tested blood samples from dairy and beef cattle across 15 states.

This study confirms that cattle are not only susceptible to typical bovine flu strains but also to human and swine influenza viruses.

Researchers tested 1,724 blood samples using enzyme-linked immunosorbent assay techniques, discovering that approximately 34% contained influenza A antibodies, with a significant presence of antibodies from the 2009 H1N1 and H3N2 strains, among others. Surprisingly, no evidence of H5N1 avian influenza was found in these cattle.

The findings come on the heels of multiple H5N1 detections in other mammals reported by the USDA, highlighting an ongoing concern regarding the virus's reach and the potential for new, more virulent strains emerging from animal reservoirs.

The research, extending over several states with the majority of samples from Missouri, signifies the critical need for continuous surveillance and study of influenza A in cattle.

This is to understand the dynamics of virus transmission across species and to mitigate future outbreaks affecting both agriculture and public health sectors.

As part of their ongoing efforts, the university plans to continue monitoring and studying these patterns, which is essential for developing strategies to manage and prevent interspecies virus transmission effectively.