In this study we analyze whether social interactions are important determinants of health preventive behaviors in Sub-Saharan Africa speci?fically on malaria preventive behaviors for children under ?five and prenatal care for pregnant women. Malaria still is the major cause of mortality in Sub-saharan Africa for children under ?five, fortunately technologies exist that can prevent and cure malaria. Among these technologies sleeping under a insecticide treated net (ITN) is considered one of most effective ways to prevent malaria, since the mosquito dies immediately when it comes into contact with the mosquito net.