Mandy Cohen

Dr. Mandy Cohen spoke with Orlando health leaders as part of her tour of the country's local health facilities. Her message: "We all need to keep working as a team."

As respiratory virus activity picks up around the country, vaccine levels remain below last year's totals, according to the CDC. Cohen has been on national blitz to improve those numbers.

In February 2020, U.S. public health labs received flawed COVID tests from the CDC. As the agency revamps, efforts to be better prepared for future threats won’t be easy, observers say.

Mandy Cohen led North Carolina's department of Health & Human Services throughout the pandemic. Now, she's taking what she learned to the national level.

Dr. Rochelle Walensky, 54, described her time at the agency as intense, but stopped short of saying she was burned out.

President Biden's pick for the next director of the CDC is Dr. Mandy Cohen, an internal medicine physician with experience in state and federal government.