Girl getting tested for malaria (IMAGE) Penn State Caption At the initial enrollment visit, all cohort children received a three-day course of an antimalarial medicine to clear any existing malaria parasite infection. A second round of parasite clearance took place one year later. If at any point during the study, a child tested positive for malaria, he or she was treated with an antimalarial medicine. Credit Daniel Lesher, Penn State Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.