Pasteurizing Milk Inactivates Highly Infectious Bird Flu: USDA Report

Published on July 3, 2024

Pasteurizing milk kills highly pathogenic bird flu virus H5N1, though some viral RNA may remain, a study conducted by researchers at the U.S. Department of Agriculture (USDA) finds. The study, published Wednesday in the Journal of Virology, evaluated nearly 300 pasteurized milk samples. About 20 percent contained noninfectious virus RNA, and the authors determined that the milk did not pose a risk to public health. Before this study, the USDA had detected the new H5N1 bird flu in raw milk. Therefore, researchers wanted to determine if pasteurization was sufficient to eliminate the virus. Pasteurization is a sanitation and food preservation method often used in milk processing. Raw milk is quickly heated for 15 seconds to 161 degrees Fahrenheit to kill pathogenic viruses and other microbes....

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