Comparative estimates of crude and effective coverage of measles immunization in low-resource settings : findings from salud Mesoamérica 2015
Periodo de realización: 2015/06/01 al 2015/01/01
Tipo: Artículo científico
Lugar(es) de estudio: Chiapas, México, Jinotega, Nicaragua
Resumen: "Timely and accurate measurement of population protection against measles is critical for decision-making and prevention of outbreaks. However, little is known about how surveybased estimates of immunization (crude coverage) compare to the seroprevalence of antibodies (effective coverage), particularly in low-resource settings. In poor areas of Mexico and Nicaragua, we used household surveys to gather information on measles immunization from child health cards and caregiver recall. We also collected dried blood spots (DBS) from children aged 12 to 23 months to compare crude and effective coverage of measles immunization. We used survey-weighted logistic regression to identify individual, maternal, household, community, and health facility characteristics that predict gaps between crude coverage and effective coverage. We found that crude coverage was significantly higher than effective coverage (83% versus 68% in Mexico"