An evaluation of Schistosoma japonicum infections in three villages in the Dongting lake region of China I. Prevalence, intensity and morbidity before the implementation of adequate control strategies

Li, Y. S., Ross, A. G. P., Yu, D. B., Li, Y., Williams, G. M. and McManus, D. P. (1997) An evaluation of Schistosoma japonicum infections in three villages in the Dongting lake region of China I. Prevalence, intensity and morbidity before the implementation of adequate control strategies. Acta Tropica, 68 1: 77-91. doi:10.1016/S0001-706X(97)00077-6


Author Li, Y. S.
Ross, A. G. P.
Yu, D. B.
Li, Y.
Williams, G. M.
McManus, D. P.
Title An evaluation of Schistosoma japonicum infections in three villages in the Dongting lake region of China I. Prevalence, intensity and morbidity before the implementation of adequate control strategies
Journal name Acta Tropica   Check publisher's open access policy
ISSN 0001-706X
1873-6254
Publication date 1997-10-14
Sub-type Article (original research)
DOI 10.1016/S0001-706X(97)00077-6
Volume 68
Issue 1
Start page 77
End page 91
Total pages 15
Place of publication Oxford
Publisher Elsevier Science B.V.
Language eng
Abstract We examined three Chinese villages (one farming village and two fishing villages) in an area highly endemic for schistosomiasis japonica in order to study the prevalence, intensity of infection and the associated morbidities before the implementation of adequate control strategies. Socio-economic status, medical histories including the frequency and type of water contact, physical examinations, parasitological examinations and questionnaires relevant to the knowledge of schistosomiasis were performed on a random sample of 1542 individuals (45% female; 55%.male). The prevalence of Schistosoma japonicum was 9.4% in the farming village and 16.5 and 26.2% in the fishing villages. Eighty-three percent of the infected population had light infections (8-100 eggs per gram stool (epg)) and only 6% had heavy infections (> 400 epg). Both the prevalence and intensity of infection varied significantly (P < 0.01) with the frequency of water contact. All the morbidity indicators (weakness, inability to work, diarrhoea, hepatomegaly and splenomegaly) were significantly higher (P < 0.01) among those infected with S. japonicum. Knowledge of schistosomiasis, in general, was unsatisfactory in all three villages; 12.4% of the population was infected when their knowledge of schistosomiasis was good, whereas 26.6% of the population was infected when their knowledge was poor. Further, it appears that schistosomiasis control based on selective chemotherapy (praziquantel) of randomly selected stool-positive individuals was ineffective in significantly reducing the prevalence of S. japonicum and its associated clinical manifestations in the villages under study.
Keyword Epidiomiology
Intensity
Morbidity
Prevalence
Schistosoma japonicum
Schistosomiasis
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Population Health Publications
School of Medicine Publications
 
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