Spatial Distribution of Human Schistosoma japonicum Infections in the Dongting Lake Region, China

The urban eco-network is the network structure in the urban eco-system that the flowing of substance, population and information have been formed in the spatial distribution. Using Analytic Network Process, MapInfo and GIS, taking Chang de city of Dong-ting Lake Region as an example, the paper analyses the integrity of urban eco-network. The results show that: (1) The characters of connection in the eco-system of forest, farmland and town are very poor between spots, the indexes of alpha, beta and gamma are very low, and the index of alpha appears negative; By comparison, the character of connection of the wetland is a little better, but its index is also low; With regards to the region, its character of connection is much better. (2) The characters of entrance in the eco-function districts is much better, transformational network is relative convenient, especially in the eco-agriculture district. (3) As to the characters of smooth in the eco-system of forest, wetland and farmland, 5 eco-function districts are the best, and 3 eco-function districts are the worst in the 17 eco-function districts.

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Epidemiologic Features of Schistosoma Japonicum among Fishermen and other Occupational Groups in the Dongting Lake Region (Hunan Province) of China

American Journal of Tropical Medicine and Hygiene ◽

10.4269/ajtmh.1997.57.302 ◽

1997 ◽

Vol 57 (3) ◽

pp. 302-308 ◽

Cited By ~ 37

Author(s):

Allen G. P. Ross ◽

Luo Xinsong ◽

Donald P. McManus ◽

Wu Z. Wu ◽

Li Yi ◽

...

Keyword(s):

Schistosoma Japonicum ◽

Dongting Lake ◽

Hunan Province ◽

Occupational Groups ◽

Lake Region ◽

Epidemiologic Features

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Absence of relationship between Schistosoma japonicum and hepatitis B virus infection in the Dongting lake region, China

Epidemiology and Infection ◽

10.1017/s0950268898008917 ◽

1998 ◽

Vol 121 (1) ◽

pp. 193-195 ◽

Cited By ~ 7

Author(s):

X.-P. YE ◽

Y.-L. FU ◽

R. M. ANDERSON ◽

D. J. NOKES

Keyword(s):

Hepatitis B Virus ◽

Hepatitis B ◽

Schistosoma Japonicum ◽

Population Based ◽

Dongting Lake ◽

Hepatitis B Virus Infection ◽

Lake Region ◽

B Virus ◽

Chronic Carriage ◽

Population Based Survey

In order to determine whether infection with Schistosoma japonicum is related to a higher rate of infection with hepatitis B virus and/or to a higher probability of HBsAg chronic carriage, a population based survey was carried out in China in which HBV markers were studied in 112 subjects with long-lasting S. japonicum infection, and 93 subjects with no S. japonicum infection 37·5% of the cases and 40·9% of controls showed no markers of HBV infection. The prevalence rate of HBsAg was 12·5% in the cases and 12·9% in the controls. For anti-HBc and anti-HBs the figures were 59·8% and 59·8%, and 27·9% and 35·0%, respectively. These data do not support the hypothesis of an interaction between infection with hepatitis B virus and S. japonicum.

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