Introduction:In October 4 th , 2018, a measles outbreak was declared in Madagascar. This study describes the epidemiology of the outbreak and determines public health implications for measles elimination in Madagascar.Methods:Data have been collected using line list developed for the outbreak. Serum samples were collected within 30 days of rash onset for laboratory testing; confirmation was made by detection of measles immunoglobulin M (IgM) antibody.Results:A total of 2,930 samples were analysed in the laboratory among which 1,086 (37%) were laboratory confirmed. Measles cases age ranged from a minimum of 1 month to a maximum of 88 years. The median and the mean were 7 years and 9 years respectively. Children between 1 to 9 years accounted for 50.6% of measles cases. Attack rate (39,014 per 1,000,000 inhabitants) and case fatality rate (1.2%) were highest among children aged 9-11 months. A total of 67.2% cases were unvaccinated. As of March 14 th , 2019, all the 22 regions and 105 (92%) health districts out of 114 were affected by the measles outbreak in Madagascar.Conclusion:Measles outbreak in Madagascar showed that the country is not on the track to achieve the goal of measles elimination by 2020.? Marcellin Mengouo Nimpa et al.
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