Vaccination against smallpox in the plantar surfaces of the feet.
D000328:Adult; D005260:Female; D005534:Foot Diseases / Q000209:etiology*; D006801:Humans; D009508:Nevus, Pigmented / Q000209:etiology; D012878:Skin Neoplasms / Q000209:etiology*; D012899:Smallpox / Q000517:prevention & control; D014611:Vaccination / Q000009:adverse effects*