antibacterial
antioxidant
antiviral
bacteria
contagious
coronavirus
dangerous
defense
detox
disease
emergency
epidemic
epidemiology
flu
health
health care
healthy
hospital
illness
immune
immune system
immunity
immunization
immunology
infection
infectious
influenza
medical
medicine
microbe
microbiology
pandemic
pharmaceutical
pharmacy
prevent
prevention
protect
protection
protective
quarantine
resistance
resistant
respiratory
safety
shield
treatment
vaccination
vaccine
virus