Preliminary note on the epidemiological studies made in El Salvador to determine the causes of the failure of residual spraying to interrupt the transmission of malaria.
D000852:Anopheles / Q000187:drug effects*; D003634:DDT; D006798:Housing; D006801:Humans; D007305:Insecticide Resistance; D008288:Malaria / Q000517:prevention & control*; D009527:Nicaragua
D003634:DDT