Schistosoma Mansoni and S. Haematobium Infections in Egypt

I. Evaluation of Techniques for Recovery of Worms and Eggs at Necropsy

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  • Department of Pathology, Faculty of Medicine, Cairo University Medical School, NAMRU-3, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Laboratory of Statistical and Mathematical Methodology, Division of Computer Research and Technology, National Institutes of Health, Cairo, Egypt

Four hundred consecutive autopsy cases were examined in Cairo, Egypt. Sixty percent of cases had Schistosoma haematobium eggs in the tissues and 25% also were infected with S. mansoni. Only a quarter of S. haematobium infections were active, while nearly two-thirds of S. mansoni cases remained active. Adult S. haematobium and S. mansoni were effectively recovered from the mesenteric circulation by a combination of perfusion and dissection. Quantitative recovery from the genitourinary system was reasonably complete, although small numbers of worms were missed in the dissection of these organs.