As of Monday, at least 42 herds in nine states are known to have cows infected with the virus known as type A H5N1, federal officials said.
Sales of raw milk appear to be on the rise, despite years of warnings about the health risks of drinking the unpasteurized products — and an outbreak of bird flu in dairy cows.
Since March 25, when the bird flu virus was confirmed in U.S. cattle for the first time, weekly sales of raw cow’s milk have ticked up 21% to as much as 65% compared with the same periods a year ago, according to the market research firm NielsenIQ.
That runs counter to advice from the Food and Drug Administration and the Centers for Disease Control and Prevention, which calls raw milk one of the “riskiest” foods people can consume.
“Raw milk can be contaminated with harmful germs that can make you very sick,” the CDC says on its website.
As of Monday, at least 42 herds in nine states are known to have cows infected with the virus known as type A H5N1, federal officials said.
The virus has been found in high levels in the raw milk of infected cows. Viral remnants have been found in samples of milk sold in grocery stores, but the FDA said those products are safe to consume because pasteurization has been confirmed to kill the virus.
It’s not yet known whether live virus can be transmitted to people who consume milk that hasn’t been heat-treated.
But CDC officials warned last week that people who drink raw milk could theoretically become infected if the bird flu virus comes in contact with receptors in the nose, mouth and throat or by inhaling virus into the lungs. There’s also concern that if more people are exposed to the virus, it could mutate to spread more easily in people.
States have widely varying regulations regarding raw milk, with some allowing retail sales in stores and others allowing sale only at farms.
