CDC warns of more US bird flu cases after second human infected by cows

Centers for Disease Control notes high levels of virus in raw milk amid outbreak among cows, after Michigan dairy worker infected

A Michigan dairy worker has been diagnosed with bird flu - the second human case associated with an outbreak in US dairy cows, after a case emerged in Texas earlier this spring.

The new patient had mild eye symptoms and has recovered, US and Michigan health officials said in announcing the case on Wednesday afternoon. The worker had been in contact with cows presumed to be infected, and the risk to the public remains low, officials said.