Poliomyelitis in the Americas, 1969-1984.
D000569:Americas; D001695:Biology; D017691:Caribbean Region; D002669:Child Welfare; D003695:Delivery of Health Care; D019049:Developed Countries; D003906:Developing Countries; D004194:Disease; D006262:Health; D006296:Health Services; D007114:Immunization; D015994:Incidence; D008511:Medicine; D009656:North America; D011315:Preventive Medicine; D011320:Primary Health Care; D012106:Research; D012107:Research Design; D013020:South America; D014611:Vaccination
Americas; Biology; Caribbean; Child Health; Delivery Of Health Care; Developed Countries; Developing Countries; Diseases--prevention and control; Health; Health Services; Immunization; Incidence--changes; Measurement; Medicine; North America; Preventive Medicine; Primary Health Care; Research Methodology; South America; Vaccination