title: [Effect evaluation of transmission control of schistosomiasis in 14 counties (cities, districts) of Jiangsu Province].
abstract: OBJECTIVE
  To assess the control effect of transmission control of schistosomiasis in 14 counties (cities, districts) of Jiangsu Province.
  
  
  METHODS
  According to the requirement of the national assessment scheme of schistosomiasis, the effect of schistosomiasis control was evaluated. The schistosomiasis morbidity and changes in Oncomelania snail status in recent 2 years were assessed. The field survey was done by using the stratified sampling method. A heavy-endemicity administrative village was randomly sampled from the townships with low, moderate and heavy endemicities in each county, respectively as the assessment villages. The morbidity in resident populations and free-grazing domestic animals and the snail infections in the settings where snails were detected and frequent human and domestic animal activities were observed in recent 3 years.
  
  
  RESULTS
  During the period from 2007 through 2010, the transmission control effect of schistosomiasis was assessed in 14 counties (cities, districts) of Jiangsu Province, and field surveys were performed in 42 villages of 39 townships. A total of 264 settings, 1 679.73 hm2 and 39 894 frames were surveyed, and 2 179 snails were collected. Of the 405 living snails dissected, no infected snails were detected, and the snail infection rate was 0. Totally 22 147 residents were investigated. The serum examination of schistosome infection was performed in 22 147 residents, and 300 were sero-positive, with a sero-positive rate of 1.35% (0.30%-4.26%). The stool examination was done in 297 sero-positive cases, and no cases were stool-positive, with a stool-positive rate of 0. A total of 2 931 domestic animals were investigated, including 230 head of cattle, 2 333 pigs and 368 sheep, and no infections were detected. The files regarding the schistosomiasis morbidity and snail status have been established in 14 counties (cities, districts). All infected snails were killed in the 14 counties (districts, cities) 2 years prior to the assessment, and the mean time that no infected snails were detected was 2.71 years (2-4 years). No acute schistosomiasis patients were found in all 14 counties (districts, cities) more than 3 years prior to the assessment.
  
  
  CONCLUSIONS
  According to the Criteria for Control and Elimination of Schistosomiasis in China (GB 15976-2006), the transmission of schistosomiasis in 14 countries (cities, districts) of Jiangsu Province has been controlled.
authors.affiliation: Jiangsu Institute of Parasitic Diseases, Key Laboratory on Technology for Parasitic Disease Prevention and Control, Ministry of Health, Wuxi 214064, China.
authors.forename: Le-Ping
authors.initials: LP
authors.lastname: Sun
authors.forename: Zeng-Xi
authors.initials: ZX
authors.lastname: Tian
authors.forename: Kun
authors.initials: K
authors.lastname: Yang
authors.forename: Yi-Xin
authors.initials: YX
authors.lastname: Huang
authors.forename: Qing-Biao
authors.initials: QB
authors.lastname: Hong
authors.forename: Yang
authors.initials: Y
authors.lastname: Gao
authors.forename: Wei-Qing
authors.initials: WQ
authors.lastname: Wu
authors.forename: Zuo-Jun
authors.initials: ZJ
authors.lastname: Qiu
authors.forename: Guo-Jing
authors.initials: GJ
authors.lastname: Yang
authors.forename: Jie
authors.initials: J
authors.lastname: Min
authors.forename: Jun
authors.initials: J
authors.lastname: Ge
authors.forename: You-Sheng
authors.initials: YS
authors.lastname: Liang
authors.forename: Qi
authors.initials: Q
authors.lastname: Gao
authors.forename: Hong-Hui
authors.initials: HH
authors.lastname: Wu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000818:Animals; D002417:Cattle; D002648:Child; D002681:China / Q000453:epidemiology; D003140:Communicable Disease Control; D006801:Humans; D008875:Middle Aged; D012552:Schistosomiasis / Q000453:epidemiology / Q000469:parasitology / Q000517:prevention & control* / Q000635:transmission*; D012756:Sheep; D012908:Snails / Q000469:parasitology; D013552:Swine; D055815:Young Adult