As the World Health Organization calls the current outbreak a “significant public health concern,” here’s everything to know about the bird flu and whether humans are at risk.

Are eggs safe to eat amid the current avian flu outbreak? Have people in the U.S. contracted bird flu? We VERIFY the answers to common questions.

Though H5N1 has fueled much of the current bird flu outbreak, it is not the only bird flu strain that has been confirmed in the U.S.

Bird flu continues to spread quickly through the U.S. farm system because that system is inherently a viral playground.