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Volume 13, Number 7—July 2007
Synopsis

Large Water Management Projects and Schistosomiasis Control, Dongting Lake Region, China

Yue-Sheng Li*†, Giovanna Raso†‡Comments to Author , Zheng-Yuan Zhao*§, Yong-Kang He*, Magda K. Ellis†, and Donald P. McManus†
Author affiliations: *Hunan Institute of Parasitic Diseases, Yueyang, People’s Republic of China; †Queensland Institute of Medical Research, Brisbane, Queensland, Australia; ‡University of Queensland, Brisbane, Queensland, Australia; §Central South University, Changsha, People’s Republic of China;

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Figure 3

Hunan Province in 2002, showing that schistosomiasis is mainly confined to the area surrounding Dongting Lake. Areas in beige are classified as endemic for schistosomiasis. Areas in light green have fulfilled the transmission control criteria and are characterized by schistosomiasis infection rates <1% for humans and animals and a snail habitat reduction of >98%. Areas in dark green have fulfilled the criterion of interrupted transmission, which means that no new human or animal schistosomiasis cases occurred in successive years, and no snails were found for >1 year.

Figure 3. Hunan Province in 2002, showing that schistosomiasis is mainly confined to the area surrounding Dongting Lake. Areas in beige are classified as endemic for schistosomiasis. Areas in light green have fulfilled the transmission control criteria and are characterized by schistosomiasis infection rates <1% for humans and animals and a snail habitat reduction of >98%. Areas in dark green have fulfilled the criterion of interrupted transmission, which means that no new human or animal schistosomiasis cases occurred in successive years, and no snails were found for >1 year.

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