Publications

schistosome infection rates in field snails: schistosoma mansoni in biomphalaria pfeifferi from kenya.	six collections of biomphalaria pfeifferi were made in the nairobi and machakos areas of kenya. individual cercarial shedding (method a) showed that 6.9% (65/938) of the snails had mature 'patent' schistosoma mansoni infections (range 3.1--34% in the six collections). crushing (method b) about one-third of the remaining snails detected no additional mature infections but yielded 1.4% (four snails from one collection) with secondary sporocysts from immature 'prepatent' infections. weekly shedding ...	1979	496488
preliminary evaluation of some wild and cultivated plants for snail control in machakos district, kenya.	fifty local medicinal, agricultural and wild growing deciduous plants, representing 49 species, 46 genera and 22 families, were screened as water extracts at 1:1000 concentration for molluscicidal activity against biomphalaria pfeifferi in machakos district, kenya. forty-seven of the 50 (94%) plants and 106 of the 134 (79%) plant materials (roots, stems, leaves, fruits, flowers and seeds) were molluscicidal. the leaves of pappea capensis (sapindaceae), steganotaenia araliacea (umbelliferae), zor ...	1987	3656497
observations on the effects of different chemotherapy strategies on the transmission of schistosoma mansoni in machakos district, kenya, measured by long-term snail sampling and cercariometry.	transmission of schistosoma mansoni was monitored by routine snail sampling for biomphalaria pfeifferi and by supplementary cercariometric measurements in 4 neighbouring study areas in machakos district, kenya. after 1 year, extensive, population-based chemotherapy with a single dose of praziquantel was given in 3 areas, but only minimal treatment in the fourth. in the year preceding treatment, seasonal transmission of s. mansoni and other non-human trematodes occurred in all 4 areas, despite so ...	1994	7800412