Human Case of Bird Flu Reported in Michigan: Third Incident This Year

A new human case of bird flu has been reported in Michigan, marking the third incident this year linked to an ongoing outbreak of the H5N1 influenza virus in U.S. dairy cows. The CDC confirmed that all three cases involved dairy farm workers who had contact with infected cows.

Previous Cases and Symptoms

The first two cases, reported in Texas in April and another in Michigan earlier in May, exhibited conjunctivitis, commonly known as “pink eye,” as the primary symptom. However, this recent case in Michigan also presented upper respiratory tract symptoms, indicating a possible evolution in the virus’s impact on humans.

Transmission Risks and Preventive Measures

Despite these human infections, the CDC emphasizes that human-to-human transmission of bird flu remains unlikely. The primary risk group continues to be farm workers with direct contact with infected cows. With 69 infected herds reported in nine states since March, additional human cases among farm workers are expected.

Vaccination and Testing Efforts

To combat the spread of the virus in cattle and prevent further human cases, scientists are developing a bird flu vaccine for cows. Additionally, cattle are being tested for bird flu when crossing state lines to mitigate the spread. The ultimate goal of the CDC is to eradicate the H5N1 virus in cattle, thereby preventing future human infections.


As efforts continue to contain the H5N1 outbreak among dairy cows, vigilance and preventive measures remain crucial to protecting both animal and human health. The CDC and U.S. Department of Agriculture are working tirelessly to manage this outbreak and prevent further cases.

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