19
2019
airlines
alert
caution sign
concept
country
cov
covid
covid 19
covid19
danger
death
detected
disease
epidemic
fatal outcome
flag
flu
h1n1
health
holland
huanggang
incubation
infected
infection
mask
medical
mers
merscov
middle east
national
ncov
netherlands
nl
outbreak
pandemic
pathogen
plague
pneumonia
prevention
quarantine
respiratory
virus