title: [Epidemiological survey on malaria situation in Motuo County of Tibet, China].
abstract: OBJECTIVE
  To make an epidemiological investigation on malaria in Motuo County, Linzhi Prefecture of Tibet.
  
  
  METHODS
  In July of the year 2006, the following activities were conducted in 2 selected villages from each of the three townships, i.e., Motuo, Dexing and Beibeng: malaria history survey among inhabitants in recent 2 years; collection of blood samples of inhabitants for examining malaria parasites, IFAT and detecting G6PD, respectively; mosquito collection in human dwellings and cattle shelters at night and various resting sites at day-time; mosquito collection by outdoor human baiting capture; classification and composition calculation of mosquito species and man biting rates; ELISA for detecting sporozoite infection of Anopheles.
  
  
  RESULTS
  The mean rate of two-year malaria history was 8.98% (118/1314) and the parasite rate was 3.13% (38/1216, all P. vivax) in the inhabitants. The parasite positive rate among the feverish patients was 7.14% (3/42). IFAT revealed a malaria antibody rate of 40.24% (472/1173). The G6PD deficiency rate was 1.74% (21/1208). Five hundred and thirteen anopheline mosquitoes were caught. They were An. maculatus (474) which occupied 92.4% (474/513), An. peditaeniatus (35), An. kochi (3) and An. sinensis (1). The mean indoor density of An. maculatus was 4.75/night in human houses, and 69.5/night in cattle shelters. The outdoor human biting rate was 22.75/half-night/person, and the sporozoite rate of An. maculatus in anopheline saliva glands was 0 by ELISA.
  
  
  CONCLUSIONS
  Motuo County is an endemic area of vivax malaria with An. maculatus as the potential vector.
authors.affiliation: Yunnan Institute of Parasitic Diseases, Yunnan Center for Malaria Research, Dali University Institute for Pathogens and Vectors, Yunnan 665000, China.
authors.forename: Zai-Xing
authors.initials: ZX
authors.lastname: Zhang
authors.forename: Hong-Ning
authors.initials: HN
authors.lastname: Zhou
authors.forename: Xiao-Tao
authors.initials: XT
authors.lastname: Zhao
authors.forename: Fu-Xing
authors.initials: FX
authors.lastname: Chang
authors.forename: Hong-Ju
authors.initials: HJ
authors.lastname: Wang
authors.forename: Xiao-Ju
authors.initials: XJ
authors.lastname: Li
authors.forename: Yang-Jin
authors.initials: YJ
authors.lastname: Zhuoma
authors.forename: Quzhen
authors.initials: Q
authors.lastname: Ciren
authors.forename: Zuoma
authors.initials: Z
authors.lastname: Bianma
authors.forename: Lamu
authors.initials: L
authors.lastname: Sangdan
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Jian
authors.initials: J
authors.lastname: Yong
authors.forename: Hui-Mei
authors.initials: HM
authors.lastname: Xu
authors.forename: Jiang
authors.initials: J
authors.lastname: Bian
authors.forename: Li-Ying
authors.initials: LY
authors.lastname: Wang
mesh_terms: D000818:Animals; D002681:China / Q000453:epidemiology; D009033:Culicidae; D006801:Humans; D016780:Malaria, Vivax / Q000453:epidemiology*; D018609:Tibet / Q000453:epidemiology