{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,19]],"date-time":"2025-09-19T09:09:24Z","timestamp":1758272964081},"reference-count":0,"publisher":"Cambridge University Press (CUP)","issue":"2","license":[{"start":{"date-parts":[[1999,8,1]],"date-time":"1999-08-01T00:00:00Z","timestamp":933465600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Parasitology"],"published-print":{"date-parts":[[1999,8]]},"abstract":"<jats:p>The distribution of helminth parasites within their host population is usually overdispersed and can be described by the \nnegative binomial distribution. The causes of this overdispersion are poorly understood, but heterogeneity in the \ndistribution of infective stages within the environment has been implicated as a possible factor. Here we describe the \ndistribution of infective stages of the rat intestinal nematode parasite <jats:italic>Strongyloides ratti<\/jats:italic> among the faecal pellets of its host. \nThe distribution of infective stages between faecal pellets is overdispersed and well described by the negative binomial \ndistribution. This overdispersion increases during the course of infection and occurs over a range of infection intensities. \nOverdispersion of nematode infective stages among faecal pellets may result in increased spatial heterogeneity of the \ninfective stages in the environment and thus may contribute to the generation of overdispersion of adult parasitic stages. \nIn addition, these findings raise important issues regarding the accurate quantification of helminth egg counts from faecal \nsamples.<\/jats:p>","DOI":"10.1017\/s0031182099004588","type":"journal-article","created":{"date-parts":[[2002,7,27]],"date-time":"2002-07-27T13:30:22Z","timestamp":1027776622000},"page":"227-235","source":"Crossref","is-referenced-by-count":9,"title":["Heterogeneity in the distribution of <i>Strongyloides ratti<\/i> \ninfective stages among the faecal pellets of rats"],"prefix":"10.1017","volume":"119","author":[{"given":"S. C.","family":"HARVEY","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"PATERSON","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. E.","family":"VINEY","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[1999,8,1]]},"container-title":["Parasitology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0031182099004588","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,4,7]],"date-time":"2019-04-07T19:21:42Z","timestamp":1554664902000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0031182099004588\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1999,8]]},"references-count":0,"journal-issue":{"issue":"2","published-print":{"date-parts":[[1999,8]]}},"alternative-id":["S0031182099004588"],"URL":"https:\/\/doi.org\/10.1017\/s0031182099004588","relation":{},"ISSN":["0031-1820","1469-8161"],"issn-type":[{"type":"print","value":"0031-1820"},{"type":"electronic","value":"1469-8161"}],"subject":[],"published":{"date-parts":[[1999,8]]}}}