[Measles outbreak in the indian community of Yaitepec, Oaxaca, 1988].
A measles outbreak that involved 230 cases occurred in 1988 in Santiago Yaitepec, Oaxaca, had an attack rate of 14% and a case-fatality ratio of 3.9%. That community is relatively speaking isolated. A pre-outbreak measles vaccine coverage of 38.7% was found among children 1-15 years old. We compared attack rates among vaccines and non-vaccines and adjusted the figures for age and source of vaccine information. The vaccine efficacy based on this comparison was 72%. We classified cases as primary and secondary for household level. The secondary attack rate was 15.5%. The comparison based on secondary attack rates yield an estimate of vaccine efficacy about 95%. The implications of the epidemic recurrence of measles for attack rates yield an estimate of vaccine efficacy about 95%. The implications of the epidemic recurrence of measles for isolated communities due to suboptimal vaccine coverage are discussed.
Dirección General de Epidemiología, México.
M C
MC
Sánchez-Vargas
O
O
López-Ortiz
A
A
Bustamante-Hernández
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D006801:Humans; D007198:Indians, North American; D007223:Infant; D007231:Infant, Newborn; D008457:Measles / Q000453:epidemiology* / Q000517:prevention & control; D008800:Mexico; D008875:Middle Aged; D012424:Rural Population; D013997:Time Factors; D014611:Vaccination
Brote de sarampión en la comunidad indígena de Yaitepec, Oaxaca, 1988.