CDC Reports Third U.S. Case of Bird Flu

The CDC has reported a third case of H5N1 bird flu in the United States, marking the second case identified in Michigan. The latest infection was confirmed in a farm worker who had contact with infected dairy cows on a different farm than the previous Michigan case. This indicates no human-to-human transmission so far.

Only 39 people have been tested for H5N1 during the 2024 outbreak, with over 350 individuals being monitored for symptoms, primarily in Michigan. The USDA recently detected H5N1 in a dairy cow intended for beef, though the contaminated meat did not enter the food supply. To address the outbreak, the USDA has allocated $824 million to protect livestock health but has yet to announce reimbursement plans for affected farms.

This is also the first case in the U.S. outbreak where the infected individual displayed respiratory symptoms, which could increase the likelihood of transmission compared to conjunctivitis seen in prior cases. Despite these concerns, genetic analysis shows no signs of the virus adapting for easier human transmission.

Michigan's proactive monitoring and serological studies have been crucial in detecting cases early and ensuring appropriate treatment. The CDC emphasizes the importance of personal protective equipment for farm workers and continues to enhance influenza surveillance over the summer months.

You can find an in-depth article on the Avian Flu and biosecurity measures here.