2
19
2019
alpha
analyze
analyzing
antibody
antigen
atk
beta
blood
certificate
coronavirus
cov
covid
covid19
delta
detectable
detected
exam
gene
kit
lab
laboratory
medical
medicine
molecular
nasopharyngeal
ncov
negative
not
pcr
positive
rapid
report
result
rt
rtpcr
sample
sars
sarscov2
swab
test
testing
throat
undetectable
undetected
vaccination
vaccine
variant