2019ncov
antibacterial
antiviral
contamination
corona
coronavirus
covid19
disease
distance
distancing
epidemic
flu
group
home
hygiene
ill
illness
illustration
immunization
infect
infected
infection
influenza
isolation
lockdown
mask
measure
medical
microorganism
movement
outbreak
pandemic
patient
people
person
plague
population
prevention
preventive
protection
quarantine
rotavirus
sanitary
social
society
treatment
virus
work
work at home