An outbreak of avian flu among dairy cows has raised concerns about the safety of raw milk. The Food and Drug Administration (FDA) has renewed warnings against consuming or manufacturing raw milk due to potential contamination with bird flu or other pathogens. However, raw milk enthusiasts continue to argue for food freedom and access to local healthy food.
Pasteurization, a heating process designed to kill pathogens that leaves behind inactive viral particles, is effective in making milk safe for consumption. The H5N1 bird flu virus was first detected in cow's milk samples from a state with known outbreaks of bird flu among its dairy cows. However, more than three-quarters of the milk samples were processed in New England and none produced conclusively positive results.
Louis Pasteur discovered the pasteurization process in the 1860s to keep people safe from foodborne illnesses. In the US, pasteurization has been required for all milk sold across state lines since 1973 and banned interstate sales of raw milk in 1987.
The Centers for Disease Control and Prevention (CDC) advises against consuming raw milk due to potential risks of contamination with various pathogens, including Listeria monocytogenes, E. coli, Campylobacter, and Salmonella. Avian flu virus particles have been found in milk of infected cows; however, pasteurization inactivates the virus.
Raw milk advocates argue for food freedom and access to local healthy food. Less than 2% of the adult population in the US drinks raw milk, with consumers falling into two camps: those who want access to local healthy food and those who want less government regulation.
Testing for bird flu virus in raw milk is not happening regularly, and data on its presence is hard to come by. Federal health officials urge caution against drinking raw milk due to potential risks of contamination with bird flu or other pathogens.