NavGeneral InfoEmail Print Original or alternative title Enquête Nationale de Couverture Vaccinale 1990 Geography Chad (TCD) Coverage type Country Time period covered 01/1990 - 12/1990 Data type Survey Summary This source appears in the WHO and UNICEF Survey Data for Immunization Coverage Time Series 2014. Keywords BCG vaccines, DTP vaccines, Immunization, Measles vaccines, Polio vaccines Citation Suggested citation Chad National Immunization Coverage Survey 1990. GHDx Entry last modified on: Jun 3, 2021