title: Thrombocytopenic purpura after smallpox vaccine.
mesh_terms: D002675:Child, Preschool; D006801:Humans; D008297:Male; D012900:Smallpox Vaccine / Q000009:adverse effects*; D013921:Thrombocytopenia / Q000209:etiology*
chemical_list: D012900:Smallpox Vaccine