Mahamasina Market, Antananarivo District, Analamanga Region, Madagascar (16/05/2024) : a baby about to receive an oral vaccine during the third day of the polio campaign. The Thursday market, which is the largest open-air market in Antananarivo, is an opportunity not to be missed for the vaccination teams of the Mahamasina Base Health Center to vaccinate a large number of children. In Madagascar, the first round of the Supplementary Immunization Activities against polio took place from May 14 to 17, 2024, i