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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Changing epidemiology of measles in Africa
Journal of Infectious Diseases, Volume 204, No. SUPPL. 1, Year 2011
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Description
Background. In Africa before the introduction of measles vaccination, measles primarily affected young children. To describe measles epidemiology in Africa since the start of accelerated measles control activities in 2001, we analyzed regional measles case-based surveillance data for 2002-2009. Methods. Country-years were grouped by 10-year moving average of routine measles vaccination coverage (aMCV1). Age was log transformed, and pair-wise comparisons of means were made. A χ 2 test was used to assess association between coverage and age groups. Cumulative percent curves and percentiles of age, dot plots with Loess curve, and Spearman rank correlation coefficient were calculated. Results. Of 180,284 suspected cases, 73,009 (41%) were confirmed as measles. Of these, the mean age was 79 months (median, 36 months; interquartile range, 16-96 months) and significantly younger in country-years with <50% aMCV1 than those with 50%-74% aMCV1 (P =. 03) and ≥75% (P =. 02). With increasing coverage, there was a slight decrease in age in the 10th and 25th and moderate increase in age in the 50th, 75th, and 90th percentiles. Conclusions. During 2002-2009, the median age of confirmed measles was 36 months. In countries with ≥50% aMCV1 coverage compared with low-coverage countries, age shifted to older children and young adults; for infants, age decreased slightly with higher coverage. © The Author 2011. Published by Oxford University Press on behalf of the Infectious Diseases Society of America. All rights reserved.
Authors & Co-Authors
Goodson, James L.
United States, Atlanta
Centers for Disease Control and Prevention
Masresha, Balcha Girma
Switzerland, Geneva
Organisation Mondiale de la Santé
Wannemuehler, Kathleen A.
United States, Atlanta
Centers for Disease Control and Prevention
Uzicanin, Amra
United States, Atlanta
Centers for Disease Control and Prevention
Cochi, Stephen L.
United States, Atlanta
Centers for Disease Control and Prevention
Statistics
Citations: 62
Authors: 5
Affiliations: 2
Identifiers
Doi:
10.1093/infdis/jir129
ISSN:
00221899
Research Areas
Health System And Policy
Infectious Diseases
Maternal And Child Health