title: Seasonal dynamics of Schistosoma japonicum infection in buffaloes in the Poyang Lake region and suggestions on local treatment schemes.
abstract: Schistosomiasis japonica remains a major public health problem and the Poyang Lake region in Jiangxi province is one of the worst affected endemic areas. Buffaloes play a major role in the transmission of Schistosoma japonicum to humans. The aim of the present study was to increase understanding of the epidemic characteristics of schistosomiasis japonica in water buffaloes in the Poyang Lake region, after achieving the national mid-term goal, and to provide a basis for further interventions. The baseline prevalence in two villages in the Poyang Lake region in May 2010 was compared with respect to usage, sex and age in the total study population. Seasonal dynamics from May 2010 to May 2011 were observed in a natural village in the studied area. The baseline prevalence of infection in both villages (Caohui and Gaozhou) was 4.94% in May 2010. The prevalence in buffalo younger than 12 months was 12.82% in Caohui and 15.11% in Gaozhou, which was significantly higher than that found in those aged 13-24 months and older than 24 months. Of the 28 infected buffaloes, 82.14% (23) were younger than 12 months. The flow of seasonal dynamics showed that S. japonicum infection buffaloes were found from May to July and from November to January of the following year. This survey suggested that it is necessary to conduct two mass treatments (especially for young animals) in late March or early April and November, with an additional treatment of positive animals in July or June.
authors.affiliation: National Laboratory of Animal Schistosomiasis Control/Key Laboratory of Animal Parasitology, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, PR China. Electronic address: jimyliu@shvri.ac.cn.
authors.forename: Jin-Ming
authors.initials: JM
authors.lastname: Liu
authors.forename: Hua
authors.initials: H
authors.lastname: Yu
authors.forename: Yao-Jun
authors.initials: YJ
authors.lastname: Shi
authors.forename: Hao
authors.initials: H
authors.lastname: Li
authors.forename: Liang
authors.initials: L
authors.lastname: He
authors.forename: Jian-Xi
authors.initials: JX
authors.lastname: Li
authors.forename: Chang-Hua
authors.initials: CH
authors.lastname: Dong
authors.forename: Qiao
authors.initials: Q
authors.lastname: Xie
authors.forename: Ya-Mei
authors.initials: YM
authors.lastname: Jin
authors.forename: Ke
authors.initials: K
authors.lastname: Lu
authors.forename: Jiao-Jiao
authors.initials: JJ
authors.lastname: Lin
mesh_terms: D000818:Animals; D002020:Buffaloes; D002681:China / Q000453:epidemiology; D005260:Female; D008297:Male; D012549:Schistosoma japonicum; D012554:Schistosomiasis japonica / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D012621:Seasons
keywords: Buffalo; Poyang lake region; Schistosoma japonicum