antibiotics
bandage
blood
blue
breath
breathing
cardiac surgery
clinic
cloth
coat
coronavirus
diagnosis
disease
doctor
epidemic
equipment
evaporation
flu
health
hospital
human
ill
illness
infection
influenza
mask
medic
medical
medicine
nurse
open heart surgery
pandemic
pathogen
pathogenic
patient
prevention
protection
protective
sars
surgery
swine
uniform
virology
virus