2019
2019 merscov
2019ncov
alert
allergy
america
caution
corona
coronavirus
cov
detected
disease
east
epidemic
failure
fatal outcome
fever
flag
h1n1
hazard
illness
infected
infection
medical
mers
merscov
middle
ncov
novel
origin
outbreak
pandemic
pneumonia
prevention
quarantine
red
respiratory
risk
sars
syndrome
test lab
united states
us
usa
vaccine
virus
vomit