{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,16]],"date-time":"2026-05-16T20:30:11Z","timestamp":1778963411816,"version":"3.51.4"},"reference-count":41,"publisher":"Cambridge University Press (CUP)","issue":"3","license":[{"start":{"date-parts":[[2016,6,23]],"date-time":"2016-06-23T00:00:00Z","timestamp":1466640000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Helminthol."],"published-print":{"date-parts":[[2017,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Knowledge of trematode infections in<jats:italic>Biomphalaria pfeifferi<\/jats:italic>from south-eastern Nigeria is scarce, due to the absence of<jats:italic>Schistosoma mansoni<\/jats:italic>infection in the region. Therefore, the present study sought to describe trematode infections in<jats:italic>B. pfeifferi<\/jats:italic>from the River Uzuru in the Nigeria Cement Factory area, Nkalagu, south-eastern Nigeria. Four hundred and sixty snails were checked for trematode infections, and mice were exposed to the<jats:italic>Schistosoma<\/jats:italic>cercariae shed from the snails. Adult worms were harvested from the mice 13 weeks post-infection, while sections of the liver and spleen were examined. Primary school children living in the area were screened for<jats:italic>S. mansoni<\/jats:italic>infection and assessed for activities involving water contact. The edges of the river were also searched for burrows and rodents. The five cercaria morphotypes found were armatae xiphidiocercariae, echinocercariae,<jats:italic>Schistosoma<\/jats:italic>cercariae, cystophorous cercariae and cercariaeum cercariae. The overall prevalence and mean intensity of trematode infections were 39.78% and 195.46, with the prevalence and mean intensity of most cercaria morphotypes higher in the hot\u2013dry than in the cool\u2013dry season. The infected mice showed<jats:italic>S. mansoni<\/jats:italic>-like characteristics but the stool samples of the schoolchildren were negative for<jats:italic>S. mansoni<\/jats:italic>eggs. Water-contact activities in the River Uzuru were minimal. Burrows were seen at the river edges but no<jats:italic>Schistosoma<\/jats:italic>eggs were recovered from captured rats. This is the first report of<jats:italic>Schistosoma<\/jats:italic>cercariae and other cercaria morphotypes in<jats:italic>B. pfeifferi<\/jats:italic>from south-eastern Nigeria. Additional molecular investigations are needed to identify correctly these<jats:italic>Schistosoma<\/jats:italic>cercariae, due to their public health implication.<\/jats:p>","DOI":"10.1017\/s0022149x16000353","type":"journal-article","created":{"date-parts":[[2016,6,23]],"date-time":"2016-06-23T09:49:09Z","timestamp":1466675349000},"page":"295-301","source":"Crossref","is-referenced-by-count":11,"title":["Trematode infections of the freshwater snail<i>Biomphalaria pfeifferi<\/i>from a south-east Nigerian community with emphasis on cercariae 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