title: Comparative efficacy of two, three, or four doses of TY21a live oral typhoid vaccine in enteric-coated capsules: a field trial in an endemic area.
authors.affiliation: Typhoid Fever Control Program, Ministry of Health, Santiago, Chile.
authors.forename: C
authors.initials: C
authors.lastname: Ferreccio
authors.forename: M M
authors.initials: MM
authors.lastname: Levine
authors.forename: H
authors.initials: H
authors.lastname: Rodriguez
authors.forename: R
authors.initials: R
authors.lastname: Contreras
mesh_terms: D000284:Administration, Oral; D002648:Child; D002677:Chile; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D008297:Male; D011897:Random Allocation; D014435:Typhoid Fever / Q000517:prevention & control*; D014436:Typhoid-Paratyphoid Vaccines / Q000008:administration & dosage*; D014611:Vaccination
chemical_list: D014436:Typhoid-Paratyphoid Vaccines