Two more bird flu cases reported in Colorado; a Michigan study finds no asymptomatic infections

Two more bird flu cases reported in Colorado, but elsewhere a study finds no asymptomatic infections U.S. health officials have announced two more bird flu cases among farmworkers. But here’s some good news: A new study in Michigan suggests the virus is not causing asymptomatic infections in people. AP News

...

Last month, the Michigan Department of Health and Human Services launched a study of workers who were around cows sickened by the bird flu. The researchers drew blood from 35 people.

One goal was to determine if there were people who never had any symptoms but did have evidence of past infections. None of the blood testing showed antibodies that would indicate such infections, the Centers for Disease Control and Prevention reported on Friday.

...