Implication of Anopheles funestusin malaria transmission in the city of Yaoundé, Cameroon

Autor: Djamouko-Djonkam, Landre, Nkahe, Diane Leslie, Kopya, Edmond, Talipouo, Abdou, Ngadjeu, Carmene Sandra, Doumbe-Belisse, Patricia, Bamou, Roland, Awono-Ambene, Parfait, Tchuinkam, Timoléon, Wondji, Charles Sinclair, Antonio-Nkondjio, Christophe, Djamouko-Djonkam, Landre, Nkahe, Diane Leslie, Kopya, Edmond, Talipouo, Abdou, Ngadjeu, Carmene Sandra, Doumbe-Belisse, Patricia, Bamou, Roland, Awono-Ambene, Parfait, Tchuinkam, Timoléon, Wondji, Charles Sinclair, Antonio-Nkondjio, Christophe
Zdroj: Parasite - Journal de la Société Française de Parasitologie; January 2020, Vol. 27 Issue: 1
Abstrakt: The contribution of Anopheles funestusto malaria transmission in the urban environment is still not well documented. The present study assesses the implication of An. funestusin malaria transmission in two districts, Nsam and Mendong, in the city of Yaoundé. Adult mosquitoes were collected using Centers for Disease Control and Prevention miniature light traps (CDC-LT) and human landing catches from April 2017 to March 2018 and were identified morphologically to the species level. Those belonging to the Anopheles gambiaecomplex and to the Anopheles funestusgroup were further processed by PCR to identify members of each complex/group. Anopheline mosquitoes were analysed to determine their infection status using an enzyme-linked immunosorbent assay. Bioassays were conducted with 2–5-day-old female Anopheles funestusand An. gambiaes.l. to determine their susceptibility to permethrin, deltamethrin and dichlorodiphenyltrichloroethane (DDT). Six anopheline species were collected in the peri-urban district of Mendong: Anopheles gambiae, An. coluzzii, An. funestus, An. leesoni, An. ziemanniand An. marshallii; only four out of the six were recorded in Nsam. Of the two members of the Anopheles gambiaecomplex collected, An. coluzziiwas the most prevalent. Anopheles coluzziiwas the most abundant species in Nsam, while An. funestuswas the most abundant in Mendong. Both Anopheles funestusand An. gambiaes.l. were found to be infected with human Plasmodiumat both sites, and both were found to be resistant to DDT, permethrin, and deltamethrin. This study confirms the participation of An. funestusin malaria transmission in Yaoundé and highlights the need to also target this species for sustainable control of malaria transmission.
Databáze: Supplemental Index