英文關鍵字
bacterium
biohazard
biology
china
contagious
corona
coronavirus
covid
death
diagnosis
diagnostic
disease
doctor
epidemic
fever
fight
flag
global
hazard
health
hospital
illness
immunity
infection
infectious
map
medical
medicine
microbiology
ohio
pandemic
panic
pathogen
pneumonia
prevention
render
research
respiratory
spread
states
symbol
united
usa
vaccine
virus
waved
waving