Résumé :
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[BDSP. Notice produite par INIST 2gJhR0x5. Diffusion soumise à autorisation]. The epidemiology of measles has been investigated in Niakhar, a rural area of Senegal, during two periods, 1983-1986 and 1987-1990. Following a major increase in immunization coverage beginning in 1987, the case fatality ratio for all ages declined fourfold from the first to the second period (relative risk (RR)=0.24,95% confidence interval (CI) 0.13-0.46). The measles incidence for children under 10 years of age declined by 69% (95% CI 65-72) and the risk of dying of measles by 91% (95% CI 82-95). Vaccinated children who contracted measles had significantly lower case fatality ratio than unvaccinated children with measles (p=0.038). Children infected by an immunized case tended to have lower case fatality ratio than those infected by an unimmunized index case (p=0.104) and immunized index cases generated fewer secondary cases than unimmunized index cases (p
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