Raw cow's milk infected with bird flu sickens mice, shows study

Mice fed raw cow's milk infected with bird flu experienced high levels of the virus in their lungs, according to a study published Friday that suggests risk to humans who consume the drink.

Over the past few years, a highly pathogenic avian influenza virus called HPAI H5N1 has spread to infect more than 50 animal species, including, from March, dairy cattle in the United States.

To date, 52 herds across the country have been affected, with two human infections involving farm workers who developed mild symptoms...