{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T03:24:17Z","timestamp":1792034657516,"version":"4.4.0"},"reference-count":0,"publisher":"Cambridge University Press (CUP)","issue":"6","license":[{"start":{"date-parts":[[1998,12,1]],"date-time":"1998-12-01T00:00:00Z","timestamp":912470400000},"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":[[1998,12]]},"abstract":"<jats:p>\n                    This paper describes the distribution of\n                    <jats:italic>Ascaris suum<\/jats:italic>\n                    in experimentally and naturally infected pigs, and offers a comparison\n \nwith\n                    <jats:italic>A. lumbricoides<\/jats:italic>\n                    infections in humans. In the first study,\n worms were recovered post-mortem from a group of 38 pigs \nthat had been trickle inoculated with 10000 infective\n                    <jats:italic>A. suum<\/jats:italic>\n                    eggs twice weekly for 12 weeks. In the second study, worms \nwere collected from a group of 49 pigs that had been kept on a pasture\n contaminated with infective\n                    <jats:italic>A. suum<\/jats:italic>\n                    eggs for \n10 weeks, after which they received treatment with an anthelmintic; they\n then were turned out on the same pasture for a \nsecond 10-week period before slaughter. The worm burdens of the naturally\n infected pigs were recorded both at treatment \nand post-mortem. Mean worm counts were similar at all occasions but the\n prevalence of infection was higher in the trickle \ninfected and naturally reinfected pigs. Furthermore, the prevalence in\n naturally infected pigs increased significantly over \nthe study period. Worm burden distributions in all groups were heavily\n overdispersed, but the distribution patterns \ndiffered significantly between groups: lower exposure (initial natural\n infection) gave a low prevalence and an almost \nuniform distribution of worm burdens among infected hosts. Continued or\n higher exposure (trickle and natural reinfection) \nresulted in increased prevalence and a reduction in the proportion of hosts\n with increasing worm load. A positive \ncorrelation was found between initial and reinfection worm burdens in the\n naturally infected pig population, suggesting \nthat individual pigs are predisposed to a high or low intensity of infection.\n The prevalence and intensity as well as the \ndistribution observed for\n                    <jats:italic>A. suum<\/jats:italic>\n                    infection in pigs were comparable\n to those reported for\n                    <jats:italic>A. lumbricoides<\/jats:italic>\n                    in endemic areas, \nand there is evidence for predisposition to\n                    <jats:italic>A. suum<\/jats:italic>\n                    in pigs, with\n an estimated correlation coefficient similar to that found \nin humans. It is concluded that\n                    <jats:italic>A. suum<\/jats:italic>\n                    infections in pigs are\n a suitable model to study the population dynamics of\n                    <jats:italic>A. lumbricoides<\/jats:italic>\n                    in human populations.\n                  <\/jats:p>","DOI":"10.1017\/s0031182098003382","type":"journal-article","created":{"date-parts":[[2002,7,27]],"date-time":"2002-07-27T09:30:22Z","timestamp":1027762222000},"page":"589-596","source":"Crossref","is-referenced-by-count":59,"title":["Distribution of\n                    <i>Ascaris suum<\/i>\n                    in experimentally and \nnaturally infected pigs and comparison with\n                    <i>Ascaris \nlumbricoides<\/i>\n                    infections in humans"],"prefix":"10.1017","volume":"117","author":[{"given":"J.","family":"BOES","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G. F.","family":"MEDLEY","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L.","family":"ERIKSEN","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"ROEPSTORFF","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P.","family":"NANSEN","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[1998,12,1]]},"container-title":["Parasitology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0031182098003382","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,5,10]],"date-time":"2019-05-10T15:48:57Z","timestamp":1557503337000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0031182098003382\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1998,12]]},"references-count":0,"journal-issue":{"issue":"6","published-print":{"date-parts":[[1998,12]]}},"alternative-id":["S0031182098003382"],"URL":"https:\/\/doi.org\/10.1017\/s0031182098003382","relation":{},"ISSN":["0031-1820","1469-8161"],"issn-type":[{"value":"0031-1820","type":"print"},{"value":"1469-8161","type":"electronic"}],"subject":[],"published":{"date-parts":[[1998,12]]}}}