A person touches a test tube labelled "Bird Flu", in this picture illustration, Janu 14, 2023. The infection of a dairy worker in Michigan expands the outbreak of the bird flu, though the CDC said the risk to the general public remains low.
Similar to the Texas case, the patient in Michigan only reported eye symptoms, the CDC said. The Michigan worker had mild symptoms and recovered, according to the state's Department of Health and Human Services.The CDC said"similar additional human cases could be identified" given high levels of the virus in raw milk from infected cows, and the extent of the spread in dairy cows.
A nasal swab from the Michigan worker tested negative for influenza in the state, but an eye swab from the patient was shipped to CDC and tested positive for the H5N1 virus, the CDC said. To limit transmission in cattle, the USDA in late April started requiring dairy cows to test negative before being shipped across state lines.