Second US Dairy Worker Contracts Bird Flu in Michigan

A second U.S. dairy worker has been infected with bird flu in Michigan, expanding the outbreak that began in March. The CDC states the risk to the public is low and has not found evidence of human-to-human transmission. The infection is believed to be from cow-to-human transmission, and the USDA is implementing measures to limit the spread. The U.S. is also in discussions with vaccine makers for a potential human vaccine.