Anoplieline species confirmed as malaria vector ifthe salivarv gland contained sporozoites. One of the method to confirmed ii was through an Enzvme-Linked Immunosorbent Assay (ELLSA). The aim of this study was to investigate the presence of circum sporozoite protein (CSP) in the mosquito of Anopheles barbirostris with ELJSA method. The study was conducted in malaria endemic area named Modu Waim…