Measles1 Surveillance System Sensitivity Oct 2015 to Sep 2016 (12M period) reporting rate of discarded cases* per 100'000 population** Eliminated countries are not maintaining sensitive surveillance Target: at least 2 discarded cases per 100'000 population by country in last 12 month period. *discarded cases are suspected measles cases which have been investigated and discarded as non-measles cases using laboratory testing and/or epidemiological-linkage. ** World population prospects, 2015 revision . 1 In the Region of the Americas, this surveillance is integrated with rubella. ≥2 (67 countries or 41%) >1 - <2 (35 countries or 22%) ≤1 (50 countries or 31%) No case based surveillance or No or insufficient data reported on discarded cases No case based surveillance or No or insufficient data reported (10 countries or 6%) Not applicable The boundaries and names shown and the designations used on this map do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate border lines for which there may not yet be full agreement. ©WHO 2016. All rights reserved. Data source: surveillance DEF file Data in HQ as of 9 November 2016