asian

bacterial

bacterium

blood

cell

cells

cold

contagion

contagious

corona

coronavirus

danger

death

diagnosis

epidemic

fever

flu

germ

health

human

illustration

immune

immunity

infect

infection

infectious

killer

lethal

medical

microbe

microbiology

microscopic

molecular

outbreak

pandemic

pathogenic

pathology

public

red

risk

science

sick

sickness

strain

symptoms

treatment

vaccination

vaccine

viral

virus

viruses