title: [The protective effect of typhoid and paratyphoid A and B vaccines. Experiences from several years vaccination trials].
mesh_terms: D006801:Humans; D011044:Poland; D012426:Russia; D012800:Siberia; D013020:South America; D014436:Typhoid-Paratyphoid Vaccines / Q000008:administration & dosage*; D014611:Vaccination; D015022:Yugoslavia
chemical_list: D014436:Typhoid-Paratyphoid Vaccines
vernacular_title: Den beskyttende effekt av tyfoid-paratyfoid A og B vaksinen. Erfaringer fra senere års vaksinajonsforsok.