Herd immunity in community, doctor with vaccine.
Palabras clave
pandemic,
virus,
infection,
vaccine,
immunity,
quarantine,
protection,
flu,
disease,
widener,
herd,
science,
epidemic,
concept,
health,
corona,
disease,
immune,
social,
people,
immunisation,
medicals,
preventive,
medicine,
symbol,
prevention,
community,
vaccination,
flu,
infected,
distance,
microorganism,
alert,
sick,
ill,
signs,
biohazard,
treatment,
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