Immunity and morbidity in schistosomiasis japonicum infection
| Autor: | P. Fevidal, Bernadette L. Ramirez, Stephen T. McGarvey, R Olveda, G R Olds, E Domingo, Peter M. Wiest, S Zhang, J Yuan, Gemiliano D.L Aligui, W.U. Tiu, Bruce L. Daniel, B Blas, Guanling Wu, Pierre Peters, Rodrigo L. C. Romulo |
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| Rok vydání: | 1996 |
| Předmět: |
Liver Cirrhosis
China medicine.medical_specialty Philippines Helminthiasis Schistosomiasis Biology Schistosoma japonicum Immunity Virology parasitic diseases Epidemiology Prevalence medicine Animals Humans Longitudinal Studies Ultrasonography Transmission (medicine) biology.organism_classification medicine.disease Praziquantel Infectious Diseases Schistosomiasis japonica Immunology Parasitology Schistosoma mansoni Morbidity medicine.drug |
| Zdroj: | The American Journal of Tropical Medicine and Hygiene. 55:121-126 |
| ISSN: | 1476-1645 0002-9637 |
| DOI: | 10.4269/ajtmh.1996.55.121 |
| Popis: | Schistosomiasis japonica differs significantly from Schistosoma mansoni infection in several epidemiologic, immunologic, and operational characteristics for control. Because of numerous nonhuman hosts, transmission remains high despite aggressive case finding and treatment of human cases. Diagnosis of infection using the Kato-Katz stool technique is less sensitive and specific in this than in other species of human schistosomes, making case finding and treatment a less effective approach to control. Clinically, morbidity induced by S. japonicum appears unrelated to intensity of infection, and is more severe than that of S. mansoni in terms of liver pathology and stunting of child growth and development. Both hepatic enlargement and fibrosis appear to be reversible and preventable with aggressive treatment but several operational characteristics for control of infection due to S. japonicum make the community impact of case-finding and treatment with praziquantel less pronounced than would have been predicted by the analysis of individual cases. In the Philippines, rebound morbidity following reinfection mandates short treatment intervals between screening and treatment to have a significant impact on morbidity, while in China inapparent infection (infection not diagnosed by a single stool examination) appears to be a common cause for persistent hepatic pathology. The authors conclude that for S. japonicum, mass treatment or targeted mass treatment is a more cost-effective approach than case-finding and treatment for control. |
| Databáze: | OpenAIRE |
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