title: Failure of chloroquine prophylaxis in Plasmodium falciparum in Zaire.
mesh_terms: D002738:Chloroquine / Q000627:therapeutic use*; D015023:Democratic Republic of the Congo; D006801:Humans; D008288:Malaria / Q000517:prevention & control*; D010963:Plasmodium falciparum; D014481:United States / Q000208:ethnology
chemical_list: D002738:Chloroquine