title: [Duration of vaccination immunity to smallpox (epidemiological observation in Southeast Asia)].
mesh_terms: D000293:Adolescent; D000328:Adult; D001210:Asia, Southeastern; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D012899:Smallpox / Q000401:mortality / Q000517:prevention & control*; D012900:Smallpox Vaccine; D013997:Time Factors; D014611:Vaccination
chemical_list: D012900:Smallpox Vaccine
vernacular_title: Prodolzhitel'nost' vaktsinal'nogo immuniteta k natural'noĭ ospe (epidemiologicheskie nabliudeniia v Iugo-Vostochnoĭ Asii)