Scientists from the University of Washington and the Fred Hutchinson Cancer Center have managed to generate a full genetic sequence of H5N1 virus from milk, a development they suggest means commercially purchased milk products could be used to monitor the progress of the bird flu outbreak in dairy cattle and to check for important changes in the virus over time.
With dairy farmers still reluctant to allow testing of their cattle, scientists trying to assess whether the outbreak is increasing or waning are in the dark. Likewise, their surveillance for important changes in the viruses — changes that would signal the virus is evolving to be better able to infect mammals — has been hampered by the limited data being shared by the U.S. Department of Agriculture. Analyzing store-bought milk could provide a work-around, the University of Washington and Fred Hutchinson researchers suggested, similar to the efforts underway to analyze wastewater from around the country to check for presence of influenza A viruses. (H5N1 is a member of that large family of flu viruses.)
Rohit Malhotra is a medical expert and health journalist who offers evidence-based advice on fitness, nutrition, and mental well-being. His articles aim to help readers lead healthier lives.
