{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,18]],"date-time":"2026-05-18T10:59:03Z","timestamp":1779101943948,"version":"3.51.4"},"reference-count":68,"publisher":"American Society of Tropical Medicine and Hygiene","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2014,4,2]]},"abstract":"<jats:p><jats:italic>Toxocara<\/jats:italic> spp. infection and the seroconversion rate in the Amazon have been poorly investigated. This study analyzed individual and household-level risk factors for the presence of IgG antibodies to <jats:italic>Toxocara<\/jats:italic> spp. in urban Amazonian children over a period of 7 years and evaluated the seroconversion rates over a 1-year follow-up. In children &lt; 59 months of age, the overall prevalence rate was 28.08% in 2003 and 23.35% in 2010. The 2010\u20132011 seroconversion rates were 13.90% for children 6\u201359 months of age and 12.30% for children 84\u2013143 months of age. Multilevel logistic regression analysis identified child age, previous wheezing, and current infection with hookworm as significant associated factors for <jats:italic>Toxocara<\/jats:italic> spp. seropositivity in 2003. In 2010, age, previous helminthiasis, and having a dog were associated with seropositivity, whereas having piped water inside the household was a protective factor. Control programs mainly need to target at-risk children, water quality control, and animal deworming strategies.<\/jats:p>","DOI":"10.4269\/ajtmh.13-0506","type":"journal-article","created":{"date-parts":[[2014,2,11]],"date-time":"2014-02-11T01:41:38Z","timestamp":1392082898000},"page":"670-681","source":"Crossref","is-referenced-by-count":18,"title":["Epidemiology and Control of Child Toxocariasis in the Western Brazilian Amazon \u2013 A Population-Based Study"],"prefix":"10.4269","volume":"90","author":[{"given":"Humberto","family":"Oliart-Guzm\u00e1n","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Breno M.","family":"Delfino","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antonio C.","family":"Martins","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Saulo A. 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