The upswing in infections echoes a pattern from last year, when a slow increase in outbreaks in October and November led to an explosion of cases in the winter.

Axios Visuals Migratory birds are driving up avian flu cases across the country, reviving concerns about U.S. readiness to respond to outbreaks, especially during the government shutdown. Why it ...

Migrating wild birds are spreading the virus to domesticated flocks, increasing the risk of eventually seeing a human ...