Related terms:
cdc
polio
jenner
rabies
tetanus
vaccinia
virus
immune
smallpox
subunit
antigen
inoculated
chickenpox
variolation
vaccine
attenuated
thiomersal
inoculation
eradication
vaccination
influenza
edward jenner
infected
preservatives
exposure
mortality rate
immune response
immune system
infectious disease
centers for disease control
Wikipedia sources:
Cowpox
Edward Jenner
Smallpox
Smallpox vaccine
Vaccine
Vaccination
Context for words:
cowpox
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