The US hasn’t learned lessons from the Covid-19 pandemic that it could use to mitigate the threat of pathogens like H5N1 bird flu that keep showing signs of their own pandemic potential, health experts told CNN Friday.

The Centers for Disease Control and Prevention (CDC) has confirmed the first severe case of bird flu in the United States, noting it has shown a “concerning” mutation, leaving health experts to warn about the risk of another pandemic.

America is heading into an even higher-risk period as the seasonal flu begins to circulate. This also raises a question of whether a person be infected by both, the seasonal flu and the H5N1 or bird flu viruses.

First come the horseshoe crabs. Hoisting their round, tank-like shells, they trundle out of the Delaware Bay under the first full moon in May to mate and lay their eggs.

Here’s what to know about the United States’ first confirmed severe case of H5N1 avian influenza—and how to protect yourself.

The death of an Oregon house cat from bird flu and a pet food recall are raising questions about how people can protect their pets.

A big cat sanctuary in Washington is temporarily closed and quarantined after bird flu killed 20 wild cats there, including cougars, bobcats and a tiger.