Volume 55, Issue 3
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Ultrasound examinations for - and -related morbidity were done in 174 schoolchildren from a subsistence farming community in southern Zimbabwe. The examinations were done according to the standardized protocol elaborated by the Cairo Working Group (the Cairo classification) and the Managil classification. Forty-six percent of the children had grade I periportal thickening (PPT) on ultrasound according to the Cairo classification, but none had grade II or higher. The significance of grade I PPT in the Cairo classification is questionable, since there were no differences between those without and those with grade I PPT with respect to intensity of infection or liver size. The prevalence of grade I PPT according to the Managil classification was 10%, and no association between the two classifications was seen. In multiple regression analysis, egg output was found to be a significant predictor of liver size, when controlling for height and sex. An interaction between and infection is suggested because the positive relationship between and liver size was seen in the presence but not in the absence of infection.


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