[Sensitivity of Plasmodium falciparum to chloroquine in the hyperendemic malaria savannah zone of Burkina Faso ex-Upper Volta. Use of in vivo and in vitro tests. Demonstration of a resistant strain in vitro].

Studies on the response of P. falciparum to chloroquine was conducted in schools located in the environs of Koudougou (Burkina Faso, Upper-Volta), where malaria is meso to hyperendemic, using in vivo studies and in vitro macroculture tests. Cases were obtained from school children, semi-immune asymptomatic carriers, in the 7-12 years-group.