Chloroquine-resistant Plasmodium falciparum malaria in West Africa.
D002738:Chloroquine / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D006801:Humans; D008288:Malaria / Q000517:prevention & control*; D008297:Male; D008875:Middle Aged; D009549:Nigeria; D010963:Plasmodium falciparum / Q000187:drug effects*; D014195:Travel
D002738:Chloroquine