The Americas The Americas is the only region where P. vivax malaria is higher than P. falciparum infections. P. vivax malaria represents 78.9% of reported malaria cases and 72.3% of estimated malaria cases.1 Source: World Malaria Report 2020 Source: World Malaria Report 2020 Source: World Malaria Report 2020 Source: World Malaria Report 2020