As officials attempt to determine the extent of bird flu outbreaks among dairy herds, some experts are urging that wastewater surveillance begin immediately.
It emerged as a powerful tool for public health officers during the COVID-19 pandemic, when it was used to gauge the prevalence of coronavirus in communities across the nation. But wastewater surveillance — the testing of sewage for signs of pathogens such as SARS-CoV-2, poliovirus and mpox virus — has yet to be employed in the tracking of H5N1 bird flu virus.
Concern over the virus escalated in March, when federal officials announced the discovery of avian flu in a Texas dairy herd. Over the next few weeks, reports of the virus in other states began to pop up. It also showed up in barn cats that drank raw milk, and in one dairy worker. H5N1 bird flu has now been detected in 36 herds across nine states, and health and U.S. Department of Agriculture officials are scrambling to determine its reach.
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