title: [Surveillance of schistosomiasis in a national surveillance site, Nanzhong Village, Nanjing City, 2010-2011].
abstract: OBJECTIVE
  To understand the dynamic of schistosomiasis epidemic situation in a national surveillance site, Nanzhong Village, Qixia District, Nanjing City, 2010-2011, so as to provide the evidence for evaluating the control effect and formulating prevention countermeasures.
  
  
  METHODS
  According to the National Schistosomiasis Monitoring Program, the Oncomelania snail status and the situation of endemic schistosomiasis were surveyed and the data were analyzed statistically.
  
  
  RESULTS
  The emergence rate of frames with living Oncomelania snails decreased by 11.67% and the average density of living snails decreased by 95.49% in 2011 compared to those in 2010. No infected snail was found during the past 2 years. The infection rate of schistosome in the permernant residents decreased from 9.93% (95/957) in 2010 to 1.35% (7/519) in 2011, and no acute schistosomiasis case was found. All the stool tests of schistosome infection in domestic animals were negative.
  
  
  CONCLUSIONS
  The schistosomiasis epidemic situation shows a decline trend year by year which demonstrates the routine comprehensive control measures are effective. However, the snail habitat area has not decreased significantly. Therefore, we should strengthen the snail control and continue the surveillance of snail status and infectious sources of schistosomiasis.
authors.affiliation: Qixia District Center for Disease Control and Prevention, Nanjing, China.
authors.forename: Ke
authors.initials: K
authors.lastname: Zhang
authors.forename: Ning
authors.initials: N
authors.lastname: Hou
authors.forename: Yun-Hua
authors.initials: YH
authors.lastname: Gong
authors.forename: Qiu-Ping
authors.initials: QP
authors.lastname: Zhang
authors.forename: Ji-Jiang
authors.initials: JJ
authors.lastname: Sun
authors.forename: Song-Huai
authors.initials: SH
authors.lastname: Liu
authors.forename: Feng
authors.initials: F
authors.lastname: Wu
mesh_terms: D000818:Animals; D002681:China / Q000453:epidemiology; D003140:Communicable Disease Control; D004199:Disease Vectors; D004285:Dogs; D062665:Epidemiological Monitoring; D006266:Health Education / Q000706:statistics & numerical data; D008975:Molluscacides; D012424:Rural Population / Q000706:statistics & numerical data*; D012552:Schistosomiasis / Q000188:drug therapy / Q000453:epidemiology* / Q000517:prevention & control / Q000635:transmission; D012908:Snails / Q000469:parasitology / Q000502:physiology
chemical_list: D008975:Molluscacides