This data set represents the best estimates of WHO using methodologies for specific indicators that aim for comparability across countries and time; they are updated as more recent or revised data become available, or when there are changes to the methodology being used. Therefore, they are not always the same as official national estimates, although WHO whenever possible will provide Member States the opportunity to review and comment on data and estimates as part of country consultations. Note that these numbers are subject to change due to ongoing reclassification, retrospective investigation and availability of laboratory results. Please check the Indicator and Measurement Registry for indicator specific information. In this section you will find data and statisticss: Countries with intense transmission Other affected countries Download most recent available data