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Table 3 Key recommendations for retrospective measles CFR studies in countries without vital registration

From: Challenges in measuring measles case fatality ratios in settings without vital registration

Survey Recommendation
Timing of survey Toward end of epidemic or very shortly thereafter
Recall period 3-12 months with start and end coinciding with major local festival or event
Household Household enumeration should be conducted using past census. Female head of household should be interviewed
Laboratory confirmation Laboratory confirmation of circulating measles in the community under study
Case Ascertainment Clinical algorithm and local term
Sampling Exhaustive house-to house survey in selected communities with reported cases
Survey teams Training on measles, survey methods, case ascertainment with supervisors responsible for no more than 2 to3 teams