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. 2005 Dec;11(12):1866-73.
doi: 10.3201/eid1112.050079.

Echinococcosis in Tibetan populations, western Sichuan Province, China

Li Tiaoying  1 , Qiu Jiamin, Yang Wen, Philip S Craig, Chen Xingwang, Xiao Ning, Akira Ito, Patrick Giraudoux, Mamuti Wulamu, Yu Wen, Peter M Schantz
Affiliations

Echinococcosis in Tibetan populations, western Sichuan Province, China

Li Tiaoying et al. Emerg Infect Dis. 2005 Dec.

Abstract

We screened 3,199 people from Shiqu County, Sichuan Province, China, for abdominal echinococcosis (hydatid disease) by portable ultrasound combined with specific serodiagnostic tests. Both cystic echinococcosis (CE) (Echinococcus granulosus infection) and alveolar echinococcosis (AE) (E. multilocularis) were co-endemic in this area at the highest village prevalence values recorded anywhere in the world: 12.9% were infected with one or the other form (6.8% CE and 6.2% AE). Prevalences of both CE and AE were significantly higher in female than male patients and increased with the age of the person screened. Pastoral herdsmen were at highest risk for infection (prevalence 19.0%). Prevalence of CE varied in 5 townships from 0% to 12.1%, whereas AE prevalence ranged from 0% to 14.3%. Risk factors associated with both infections included the number of owned dogs, frequency of contact with dogs, and sources of drinking water.

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Figures

Figure 1
Figure 1
Study area in Sichuan Province, China.
Figure 2
Figure 2
Lesions of cystic echinococcosis (CE) by abdominal ultrasound examination. A) CE lesion with distinct rim. B) Typical CE lesion with daughter cysts. C) Calcified CE lesion after chemotherapy.
Figure 3
Figure 3
Lesions of alveolar echinococcosis (AE) by abdominal ultrasound examination. A) Calcified lesion: hyperechoic structure with a typical posterior shadow. B) Nodular hyperechoic lesion. C) Typical AE lesion: nonhomogeneous hyperechoic partially calcified area, without central necrosis. D) Typical AE lesion with central necrosis.
Figure 4
Figure 4
Human prevalences of echinococcosis by age groups. HD, hydatidosis; CE, cystic echinococcosis; AE, alveolar echinococcosis.
Figure 5
Figure 5
Prevalences of echinococcosis by sex and age groups. HD, hydatidosis.
See this image and copyright information in PMC

References

    1. Schantz PM, Chai JJ, Craig PS, Echert J, Jenkins DJ, Macpherson CNL, et al. Epidemiology and control of hydatid disease. In: Thompson RCA, Lymbery AJ, editors. Echinococcosis and hydatid disease. Wallingford, UK: CAB International; 1995. p. 233–331.
    1. Kern P, Bardonnet K, Renner E, Auer H, Pawlowski Z, Ammann RW, et al. European echinococcosis registry: human alveolar echinococcosis, Europe, 1982–2000. Emerg Infect Dis. 2003;9:343–9. - PMC - PubMed
    1. Jiang C. Alveolar echinococcosis in China. Chin Med J (Engl). 1998;111:470–5. - PubMed
    1. Qiu JM, Liu FJ, Schantz PM, Ito A, Delker C, He JG, et al. Epidemiological study on human hydatidosis in Tibetan region of Western Sichuan. Chin J Zoonoses. 2000;10:77–80.
    1. The committee of compiling Shiqu County annals. The Shiqu annals. Chengdu, Sichuan Province, China: Sichuan People's Press; 2000. p. 1–3.

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