Vaccine critic Dave Weldon, President Donald Trump's pick to lead the U.S. Centers for Disease Control and Prevention, will face rising measles cases and bird flu threats at an agency already in turmoil from staff cuts and public distrust over the COVID-19 pandemic.

Almost 6 in 10 Americans who identify as Republican do not trust the Centers for Disease Control and Prevention (CDC) to provide reliable information on H5N1 bird flu, according to a new poll from health care nonprofit KFF.

No new human cases of avian influenza have been reported, and poultry infections are low so far in March. But infections in cats are continuing, and new research is raising concerns about the virus