Abstract
BackgroundMeasles still remains an important cause of morbidity and mortality among children in many developing countries, especially in refugee settings where fatality rates as high as 33% have been documented. From January to April 2004, concurrent measles and rubella outbreaks had occurred in four transit camps hosting 2,767 Liberian refugees in Cote d'Ivoire.ObjectiveThis study describes the epidemiology of concurrent measles and rubella outbreaks, and the investigation of a Disease Surveillance Team.MethodsPatients meeting the case-definition (rash and fever > 38°C) were detected actively. Blood sample were collected for measles and rubella IgM antibody confirmation.ResultsSixty rash and fever cases were identified. During weeks 8 to 13, measles IgM testing had resulted in 61.1% positive tests. The highest incidence (18.5%) was observed in children below 9 months. Ninety-three percent of children aged between 6 months and 12 years received a measles vaccination but the rash and fever cases continued to occur. This prompted a systematic test for both measles and rubella IgM antibodies. Rubella IgM testing had resulted in 74.0% positive tests. The highest incidence (3.88%) was found in children between 5–15 years. Supplemental immunization with a measles-mumps-rubella (MMR) vaccine was conducted, following which, no fever and rash cases were documented.ConclusionsThis study indicates the importance of an early serological testing for measles and rubella together or the use of the MMR vaccine rather than only measles vaccine in disasters settings. Good management of surveillance data will be an asset for effective immunization strategies in refugee settings.
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