Vaccines and man.
D003362:Cost-Benefit Analysis; D006801:Humans; D012900:Smallpox Vaccine / Q000009:adverse effects; D014611:Vaccination / Q000191:economics; D014612:Vaccines / Q000009:adverse effects; D014613:Vaccines, Attenuated; D014614:Vaccines, Synthetic
D012900:Smallpox Vaccine; D014612:Vaccines; D014613:Vaccines, Attenuated; D014614:Vaccines, Synthetic