CDC / Unsplash
HHS
CDC / Unsplash
National Cancer Institute/Unsplash
Elijah Nouvelage/Getty Images
Kayla Bartkowski/Getty Images
CDC / Unsplash
Chip Somodevilla / Getty Images
National Institute of Allergy and Infectious Diseases / Unsplash
(Top) John Moore, (Bottom) Elijah Nouvelage/Getty Images
Walter Otto / Unsplash
CDC / Unsplash
Matt Anderson / Getty Images
Elijah Nouvelage/Getty Images
National Cancer Institute/Unsplash
Anna Moneymaker / Getty Images
Spencer Platt / Getty Images
Julia Koblitz/Unsplash
Ahs856/Wikimedia Commons
H_Ko/Shutterstock
Drew Hays/Unsplash
Alex Azar, secretary of Health and Human Services. Photo: Wikimedia