英文關鍵字
age
alert
bacteria
biohazard
book
casket
china
coffin
contagious
contamination
corona
coronavirus
covid19
danger
dangerous
death
disease
epidemic
farewell
fever
flu
funeral
funerals
goodbye
grieve
hearse
illness
infect
infected
infection
influenza
love
medical
medicine
memorial
microbiology
mourn
old
pandemic
patient
peace
pneumonia
prevention
quarantine
rate
respiratory
sadness
sickness
signing
vaccine
virology
virus
warning