infection rates for some Plasmodium falciparum

Presence of circumsporozoite protein (CSP) was Plasmodium falciparum detected by enzyme linked immunosorbent assay (ELISA) in a sample of s.s., and collected in Anopheles gambiae A. melas A. pharoensis Guinea-Bissau during October and November 2009. The percentage of P. infected samples (10.2% overall; confidence interval (CI): falciparum 7.45-13.6%) was comparable to earlier studies from other sites in Guinea-Bissau (9.6-12.4%). The majority of the specimens collected were identified as . which had an individual infection rate of 12.6 % (CI: A gambiae 8.88-17.6) across collection sites. A small number of specimens of A. coluzzii, x hybrids, . and . were collected A. coluzzii A. gambiae A melas A pharoensis and had infection rates of 4.3% (CI:0.98-12.4), 4.1% (CI:0.35-14.5), 11.1% (CI:1.86-34.1) and 33.3% (CI:9.25-70.4) respectively. Despite being present in low numbers in indoor collections, the exophilic feeding behaviors of . A melas (N=18) and . (N=6) and high infection rates observed in this A pharoensis survey suggest -malaria transmission potential outside of the falciparum protection of bed nets. 1,4 1,3 1 2