RESUMO
Only a few studies of chloroquine-resistant malaria have been conducted in the Republic of Yemen; such studies have not been conducted in Socotra Island. It is the aim of this study, to conduct such a study among the school children on the island. A cross sectional descriptive study using a 7 day in vivo test was conducted in order to determine the prevalence of malaria among elementary school children in Hudibou [Socotra Island], to study susceptibility of P. Falciparum to chloroquine, and to determine the degree of chloroquine resistance. Findings revealed that the prevalence of malaria was 11%, chloroquine-resistant malaria was found to be 15.38%. First and second degree of resistance were reported. Four cases [15.38%] of chloroquine resistance were observed, of which 2 [7.69%] represented early RI and 2 [7.69%] represented RII