Featured in epidemiology

two gloved hands hold up a black and white globe with a medical mask stretched over it against a blue background with several red coronaviruses on it
Gloved hands testing a COVID-19 sample in a lab
People wearing masks looking out the window of a diner during the COVID-19 pandemic
Tim Enthoven illustration
halloween decorations
video call on laptop
Couple walking while wearing masks
A stage with an American flag and a Trump campaign sign
vials of blood
Viruses like influenza often evolve in livestock, like the pigs pictured here.