英文關鍵字
2019
4th
administer
booster
bottle
care
clinical
copyspace
corona
coronavirus
cov
covid
covid19
disease
dose
doses
four
fourth
health
healthcare
immunization
jab
medic
medical
medicine
mrna
ncov
new
omicron
portrait
research
sars
shot
shots
vaccinating
vaccination
vaccine
vaccines
variant
variants
vertical
vial