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Therefore, dynamics in prevalence and infection pattern of the major intestinal parasites should be explored.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>The distribution of three parasites including soil-transmitted helminths (STH), intestinal protozoa and <jats:italic>C. sinensis<\/jats:italic> in Zhejiang from 2014 to 2015 were explored. Kato-Katz technique was used for STH and <jats:italic>C. sinensis<\/jats:italic> detection, whereas transparent adhesive paper anal swab was used for pinworm detection, and iodine smear was used for protozoa detection. A questionnaire survey on alimentary habits and sanitary behaviors was conducted in half of the studied counties.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>This study recruited 23,552 participants: 19,935 from rural and 3617 from urban area. Overall prevalence of intestinal helminth infections was 1.80%. In this study, seven helminth species were identified including <jats:italic>A. duodenale<\/jats:italic>, <jats:italic>N. americanus<\/jats:italic>, <jats:italic>Trichuris trichiura, Ascaris lumbricoides<\/jats:italic>, <jats:italic>C. sinensis<\/jats:italic>, <jats:italic>Fasciolopsis buski<\/jats:italic> and pinworm. The average prevalence of STH infection was 1.71%: 1.94% in rural and 0.44% in urban area. Hookworm was the most prevalent infection at 1.58%: 1.79% in rural and 0.44% in urban area. Prevalence varied considerably in the studied counties. Prevalence was highest in Yongkang county at 10.25%. Only 2.79% of children from rural area were infected with pinworm. A proportion of 0.40% of rural participants were infected with protozoa, whereas <jats:italic>Endolimax nana<\/jats:italic> was the most prevalent at 0.23%. <jats:italic>C. sinensis<\/jats:italic> showed infection only in one man. Awareness on <jats:italic>C. sinensis<\/jats:italic> was 24.47% in rural and 45.96% in urban area, respectively.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Prevalence of STH and protozoa infections declined considerably whereas <jats:italic>C. sinensis<\/jats:italic> infections remained few in Zhejiang province compared with the prevalence reported in previous large scale surveys (19.56% for national STH infection in 2004, 18.66% and 4.57% for provincial STH and protozoa infection, respectively in 1999). The findings of this study showed that hookworm, mainly <jats:italic>N. americanus<\/jats:italic> remained a parasitic threat to population health, mainly in the central and western Zhejiang. Therefore, more health education regarding fertilization and farming habits is necessary in rural areas. The awareness concerning hookworm infection should be reinforced.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12879-021-06879-x","type":"journal-article","created":{"date-parts":[[2021,11,27]],"date-time":"2021-11-27T10:02:28Z","timestamp":1638007348000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Soil-transmitted helminths, intestinal protozoa and Clonorchis sinensis infections in southeast China"],"prefix":"10.1186","volume":"21","author":[{"given":"Yan","family":"Feng","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kegen","family":"Yu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hualiang","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuan","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiaoyi","family":"Lu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoxiao","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xueying","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Linong","family":"Yao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3717-3055","authenticated-orcid":false,"given":"Wei","family":"Ruan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,11,27]]},"reference":[{"issue":"7","key":"6879_CR1","doi-asserted-by":"publisher","first-page":"e2865","DOI":"10.1371\/journal.pntd.0002865","volume":"8","author":"PJ Hotez","year":"2014","unstructured":"Hotez PJ, Alvarado M, Bas\u00e1\u00f1ez M-G, Bolliger I, Bourne R, Boussinesq M, Brooker SJ, Brown AS, Buckle G, Budke CM, et al. 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The research protocol was reviewed and approved by the Ethical Review Committee of National Institute of Parasitic Disease, Chinese Center of Disease Control and Prevention. Verbal informed consent was obtained from all participants before the sample collection and the face-to-face survey.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no conflicts of interest.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"1195"}}