Assessment of Community Event–Based Surveillance for Ebola Virus Disease, Sierra Leone, 2015
Published Date:Aug 2016
Source:Emerg Infect Dis. 22(8):1431-1437.
Keywords:Assessment Of Community Event–Based Surveillance For Ebola Virus Disease, Sierra Leone, 2015
Community Event–based Surveillance
Ebola Virus Disease
Pubmed Central ID:PMC4982166
Description:In 2015, community event-based surveillance (CEBS) was implemented in Sierra Leone to assist with the detection of Ebola virus disease (EVD) cases. We assessed the sensitivity of CEBS for finding EVD cases during a 7-month period, and in a 6-week subanalysis, we assessed the timeliness of reporting cases with no known epidemiologic links at time of detection. Of the 12,126 CEBS reports, 287 (2%) met the suspected case definition, and 16 were confirmed positive. CEBS detected 30% (16/53) of the EVD cases identified during the study period. During the subanalysis, CEBS staff identified 4 of 6 cases with no epidemiologic links. These CEBS-detected cases were identified more rapidly than those detected by the national surveillance system; however, too few cases were detected to determine system timeliness. Although CEBS detected EVD cases, it largely generated false alerts. Future versions of community-based surveillance could improve case detection through increased staff training and community engagement.
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