Bird flu infects second person in US: What we know

A farmworker in Michigan is the second person to become infected with the current H5N1 bird flu virus.

The farmworker had mild symptoms and has since recovered, local health officials said.

According to Michigan’s chief medical executive, Natasha Bagdasarian, the current health risk to the public remains low, but the virus has circulated in dairy and poultry farms across the country this spring.

Here’s what we know about the bird flu infections.

Bird flu spread

Avian influenza...