The epidemiology of schistosomiasis in Egypt: Qalyubia Governorate
| Autor: | Mudasser Habib, F Gamil, B L Cline, F Abdel Aziz |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Adult
Liver Cirrhosis Male Rural Population medicine.medical_specialty Adolescent Population Helminthiasis Prevalence Schistosomiasis Feces Schistosomiasis haematobia Age Distribution Risk Factors Virology Environmental health parasitic diseases Epidemiology medicine Helminths Humans Sex Distribution education Child Parasite Egg Count Ultrasonography Schistosoma haematobium education.field_of_study biology business.industry Infant Newborn Infant Middle Aged medicine.disease biology.organism_classification Schistosomiasis mansoni Infectious Diseases Child Preschool Immunology Parasitology Egypt Female Schistosoma mansoni Morbidity business Hepatomegaly |
| Zdroj: | The American journal of tropical medicine and hygiene. 62 |
| ISSN: | 0002-9637 |
| Popis: | The primary objectives of this study, carried out in Qalyubia Governorate in Egypt (south-central Nile Delta), were to continue tracking historical trends of infection prevalence of Schistosoma mansoni and S. haematobium, determine whether satellites (ezbas) of mother villages differed significantly with respect to schistosomiasis transmission, and to asses schistosomiasis-induced morbidity on a population basis using ultrasonography. Our study revealed that S. haematobium has virtually disappeared from Qalyubia governorate, and that S. mansoni prevalence continues to decline slowly (17% in 1991 compared with 19% in 1990). The prevalence of intestinal schistosomiasis was actually higher in the mother villages than in the ezbas of the same villages, indicating that prevalence based on surveys of villages alone did not (at least for Qalyubia) cause underestimates of true prevalence. (A mother village is the large village in an area that includes hamlets or ezbas. In many areas, the infection rate in ezbas is significantly higher than in the larger central village.) Ultrasonographic studies revealed that less than 3% of the population had stage 2 or stage 3 periportal fibrosis, commonly associated with chronic schistosomiasis mansoni. This low level of morbidity was consistent with earlier data from Qalyubia, which also showed a low level of S. mansoni-induced morbidity in this governorate. |
| Databáze: | OpenAIRE |
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