title: Transmission intensity and malaria vector population structure in Magugu, Babati District in northern Tanzania.
abstract: A 1-year longitudinal study was conducted in Magugu in Babati district, northern Tanzania to determine malaria vector population structure and malaria transmission indices. Mosquitoes were sampled using the Centre for Disease Control (CDC) light traps. A total of 110,357 adult female mosquitoes were collected. Anopheles gambiae s.1. accounted 25% of the total female mosquito collected. Relatively fewer An. funestus were collected. Other mosquito species collected were An. pharoensis, An. coustani, An. maculipalpis, An. marshallii, Culex quinquefasciatus, Cx unnivittatus, Mansonia uniformis and Ma. africana. An analysis by Polymerase Chain Reaction revealed that An. arabiensis was the only member of the An. gambiae complex in the collected samples. The number of mosquito collected correlated with the increasing mean rainfall. Blood meal analysis showed a higher human enzymatic reaction among An. gambiae s.1. (63.5%) followed by An. funestus (42.9%). Bovine enzymatic reaction was higher among An. coustani (73.7%) followed by the An. pharoensis (66.7%). The Enzyme Linked Immunosorbent Assay (ELISA) was used to detect Plasmodium falciparum circumsporozoites proteins in 10,000 female Anopheles mosquitoes. Only two An. arabiensis were found to be infected. The entomological inoculation rate (EIR) was estimated at 0.51 infectious bites per person per year. This EIR was considered to be relatively low, indicating that malaria transmission in this area is low. Variability in mosquito blood meal shows availability of variety of preferred blood meal choices and impact of other factors inhibiting mosquito-human host contact. The study has provided information considered useful in the mapping of the vector distribution and population structure in the country. Such information is considered to be among the essential tools for planning malaria control interventions.
authors.affiliation: Kilimanjaro Christian Research Institute, P O. Box 2236, Moshi, Tanzania. cmwanziva@yahoo.com
authors.forename: Charles E
authors.initials: CE
authors.lastname: Mwanziva
authors.affiliation: Kilimanjaro Christian Research Institute, P O. Box 2236, Moshi, Tanzania.
authors.forename: Jovin
authors.initials: J
authors.lastname: Kitau
authors.affiliation: National Institute for Medical Research, Muheza, Tanzania.
authors.forename: Patrick K
authors.initials: PK
authors.lastname: Tungu
authors.affiliation: National Institute for Medical Research, Tukuyu, Tanzania.
authors.forename: Clement N
authors.initials: CN
authors.lastname: Mweya
authors.affiliation: Kilimanjaro Christian Research Institute, P O. Box 2236, Moshi, Tanzania.
authors.forename: Humphrey
authors.initials: H
authors.lastname: Mkali
authors.affiliation: National Institute for Medical Research, Mwanza, Tanzania.
authors.forename: Chacha M
authors.initials: CM
authors.lastname: Ndege
authors.affiliation: St. John University of Tanzania, Dodoma, Tanzania.
authors.forename: Alex
authors.initials: A
authors.lastname: Sangas
authors.affiliation: Kilimanjaro Christian Research Institute, P O. Box 2236, Moshi, Tanzania.
authors.forename: Charles
authors.initials: C
authors.lastname: Mtabho
authors.affiliation: Kilimanjaro Christian Research Institute, P O. Box 2236, Moshi, Tanzania.
authors.forename: Charles
authors.initials: C
authors.lastname: Lukwaro
authors.affiliation: Ifakara Health Institute, Ifakara, Tanzania.
authors.forename: Salum
authors.initials: S
authors.lastname: Azizi
authors.affiliation: National Institute for Medical Research, Muheza, Tanzania.
authors.forename: Joseph
authors.initials: J
authors.lastname: Myamba
authors.affiliation: Kilimanjaro Christian Research Institute, P O. Box 2236, Moshi, Tanzania.
authors.forename: Jaffu
authors.initials: J
authors.lastname: Chilongola
authors.affiliation: National Institute for Medical Research, Muheza, Tanzania.
authors.forename: Stephen M
authors.initials: SM
authors.lastname: Magesa
authors.affiliation: Kilimanjaro Christian Research Institute, P O. Box 2236, Moshi, Tanzania.
authors.forename: Seif
authors.initials: S
authors.lastname: Shekalaghe
authors.affiliation: Kilimanjaro Christian Research Institute, P O. Box 2236, Moshi, Tanzania.
authors.forename: Franklin W
authors.initials: FW
authors.lastname: Mosha
mesh_terms: D000818:Animals; D000852:Anopheles / Q000469:parasitology*; D002417:Cattle; D002487:Centers for Disease Control and Prevention, U.S.; D004285:Dogs; D005260:Female; D006041:Goats; D006801:Humans; D007303:Insect Vectors / Q000469:parasitology*; D008137:Longitudinal Studies; D016778:Malaria, Falciparum / Q000635:transmission*; D016133:Polymerase Chain Reaction; D011891:Rain; D013636:Tanzania / Q000453:epidemiology; D014481:United States