A third person has now tested positive for H5N1 in the US, the second case to be detected in Michigan, the US Centers for Disease Control and Prevention (CDC) announced on Thursday.
A farm worker who had contact with sick cows tested positive for the virus. This new case does not seem to indicate human-to-human transmission of the highly pathogenic avian flu, as it was detected on a different farm from the previous Michigan case, officials said.
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