A wildlife sanctuary in Washington state is under quarantine after 20 big cats died due to H5N1 bird flu infections.

Bird flu has been on the rise in Washington state and one sanctuary was hit hard: 20 big cats – more than half of the facility’s population – died over the course of weeks.

An animal sanctuary in Washington is under quarantine after 20 big cats died amid a bird flu outbreak, the Wild Felid Advocacy Center announced.