The administration imposed mandatory quarantine orders on two passengers from the cruise ship hit by hantavirus and is blocking Americans who catch Ebola from returning home for treatment.

(Image credit: Rebecca S. Gratz)

New modeling from the CDC shows that if measures aren't taken immediately, this outbreak could sicken more than 20,000 people in the next three months.

(Image credit: Daniel Buuma)

Some jurisdictions have weakened their public health authorities in response to criticism of lockdowns, school closures, mask mandates, vaccine requirements and other COVID-era restrictions.

(Image credit: PATRICK T. FALLON)