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. 1990;68(6):777–787.

Measurement of schistosomiasis-related morbidity at community level in areas of different endemicity.

C Hatz 1, L Savioli 1, C Mayombana 1, J Dhunputh 1, U M Kisumku 1, M Tanner 1
PMCID: PMC2393167  PMID: 2127383

Abstract

Among the indicators of schistosomiasis morbidity currently used in control programmes, ultrasound has been found to be a safe, non-invasive and efficient technique for detecting schistosomiasis-related lesions and for assessing the effect of treatment on their resolution. Three case-studies from East Africa, in areas of different endemicity for Schistosoma haematobium, using ultrasound are described and their results related to indirect measurements of the disease (e.g., haematuria, egg counts). This review reveals that cross-sectional ultrasound surveys can be used to quickly assess subsamples of populations in areas of different endemicity, in order to make decisions about sampling strategies in control programmes. The association between the intensity of infection and urinary tract abnormalities is reviewed and evaluated. One case study provides information on the resolution of S. haematobium-related uropathy after treatment; this information is crucial in order to maintain low levels of morbidity in a community. The role of ultrasound is further discussed, particularly as a tool to complement and validate indirect morbidity control measurements. The validation of such indirect measurements for use as a basis for public health decisions is important because they can be carried out by existing health care services in many areas.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Abul-Khair M. H., Arafa N. M., Sobeih A. M., Taalab A. A. Sonography of bilharzial masses of the scrotum. J Clin Ultrasound. 1980 Jun;8(3):239–240. doi: 10.1002/jcu.1870080310. [DOI] [PubMed] [Google Scholar]
  2. Burki A., Tanner M., Burnier E., Schweizer W., Meudt R., Degrémont A. Comparison of ultrasonography, intravenous pyelography and cystoscopy in detection of urinary tract lesions due to Schistosoma haematobium. Acta Trop. 1986 Jun;43(2):139–151. [PubMed] [Google Scholar]
  3. Doehring E., Reider F., Schmidt-Ehry G., Ehrich J. H. Reduction of pathological findings in urine and bladder lesions in infection with Schistosoma haematobium after treatment with praziquantel. J Infect Dis. 1985 Oct;152(4):807–810. doi: 10.1093/infdis/152.4.807. [DOI] [PubMed] [Google Scholar]
  4. Ellenbogen P. H., Scheible F. W., Talner L. B., Leopold G. R. Sensitivity of gray scale ultrasound in detecting urinary tract obstruction. AJR Am J Roentgenol. 1978 Apr;130(4):731–733. doi: 10.2214/ajr.130.4.731. [DOI] [PubMed] [Google Scholar]
  5. FORSYTH D. M., MACDONALD G. UROLOGICAL COMPLICATIONS OF ENDEMIC SCHISTOSOMIASIS IN SCHOOL-CHILDREN. I. USAGARA SCHOOL. Trans R Soc Trop Med Hyg. 1965 Mar;59:171–178. doi: 10.1016/0035-9203(65)90078-7. [DOI] [PubMed] [Google Scholar]
  6. Forsyth D. M. A longitudinal study of endemic urinary schistosomiasis in a small East African community. Bull World Health Organ. 1969;40(5):771–783. [PMC free article] [PubMed] [Google Scholar]
  7. Hussain S., Hawass N. D., Zaidi A. J. Ultrasonographic diagnosis of schistosomal periportal fibrosis. J Ultrasound Med. 1984 Oct;3(10):449–452. doi: 10.7863/jum.1984.3.10.449. [DOI] [PubMed] [Google Scholar]
  8. King C. H., Lombardi G., Lombardi C., Greenblatt R., Hodder S., Kinyanjui H., Ouma J., Odiambo O., Bryan P. J., Muruka J. Chemotherapy-based control of schistosomiasis haematobia. I. Metrifonate versus praziquantel in control of intensity and prevalence of infection. Am J Trop Med Hyg. 1988 Sep;39(3):295–305. doi: 10.4269/ajtmh.1988.39.295. [DOI] [PubMed] [Google Scholar]
  9. Macdonald G., Forsyth D. M., Rashid C. Urological complications of endemic schistosomiasis in schoolchildren. 4. As modified by treatment. Trans R Soc Trop Med Hyg. 1968;62(6):775–781. doi: 10.1016/0035-9203(68)90004-7. [DOI] [PubMed] [Google Scholar]
  10. Morin M. E., Baker D. A. The influence of hydration and bladder distension on the sonographic diagnosis of hydronephrosis. J Clin Ultrasound. 1979 Jun;7(3):192–194. doi: 10.1002/jcu.1870070306. [DOI] [PubMed] [Google Scholar]
  11. Zumstein A. A study of some factors influencing the epidemiology of urinary schistosomiasis at Ifakara (Kilombero District, Morogoro Region, Tanzania). Acta Trop. 1983 Sep;40(3):187–204. [PubMed] [Google Scholar]

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