Typhoid vaccines:  WHO position paper.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D019049:Developed Countries; D006801:Humans; D011135:Polysaccharides, Bacterial / Q000627:therapeutic use; D012485:Salmonella typhi / Q000276:immunology; D014435:Typhoid Fever / Q000382:microbiology / Q000517:prevention & control; D014436:Typhoid-Paratyphoid Vaccines / Q000627:therapeutic use*; D014944:World Health Organization
D011135:Polysaccharides, Bacterial; C072772:Ty21a typhoid vaccine; D014436:Typhoid-Paratyphoid Vaccines; C057664:Vi polysaccharide vaccine, typhoid