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We studied these relationships in a cohort of six\u2010month\u2010old Malawian infants.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>As part of a nutrient supplementation trial for 12\u00a0months, we documented disease symptoms of 840 participant daily and anthropometric measurements every three months. Stool specimens were collected every six months and analysed for <jats:italic>Giardia lamblia<\/jats:italic>,<jats:italic> Cryptosporidium<\/jats:italic> species and enterovirus, rotavirus, norovirus, parechovirus and rhinovirus using polymerase chain reaction (<jats:styled-content style=\"fixed-case\">PCR<\/jats:styled-content>). The prevalence of the microbes was compared to the children's linear growth and the dietary.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The prevalence of the microbes was similar in every intervention group. All age groups combined, children negative for <jats:italic>G<\/jats:italic>.\u00a0<jats:italic>lamblia<\/jats:italic> had a mean standard deviation (<jats:styled-content style=\"fixed-case\">SD<\/jats:styled-content>) of \u22120.01 (0.49) change in length\u2010for\u2010age <jats:italic>Z<\/jats:italic>\u2010score (<jats:styled-content style=\"fixed-case\">LAZ<\/jats:styled-content>), compared to \u22120.12 (0.045) among <jats:italic>G.\u00a0lamblia<\/jats:italic> positive children (difference \u22120.10, 95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content> \u22120.21 to \u22120.00, p\u00a0=\u00a00.047). The <jats:styled-content style=\"fixed-case\">LAZ<\/jats:styled-content> change difference was also statistically significant (p\u00a0=\u00a00.042) at age of 18\u201321\u00a0months but not at the other time points.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Asymptomatic <jats:italic>G.\u00a0lamblia<\/jats:italic> infection was mainly associated with growth reduction in certain three\u2010month periods. The result refers to the chronic nature of <jats:italic>G.\u00a0lamblia<\/jats:italic> infection.<\/jats:p><\/jats:sec>","DOI":"10.1111\/apa.14832","type":"journal-article","created":{"date-parts":[[2019,5,1]],"date-time":"2019-05-01T02:55:51Z","timestamp":1556679351000},"page":"1833-1840","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Presence of <i>Giardia lamblia<\/i> in stools of six\u2010 to 18\u2010month old asymptomatic Malawians is associated with children's growth failure"],"prefix":"10.1111","volume":"108","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9028-0904","authenticated-orcid":false,"given":"Kirsi\u2010Maarit","family":"Lehto","sequence":"first","affiliation":[{"name":"Center for Child Health Research Faculty of Medicine and Health Technology and Tampere University Hospital Tampere University Tampere Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yue\u2010Mei","family":"Fan","sequence":"additional","affiliation":[{"name":"Center for Child Health Research Faculty of Medicine and Health Technology and Tampere University Hospital Tampere University Tampere Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sami","family":"Oikarinen","sequence":"additional","affiliation":[{"name":"Faculty of Medicine and Health Technology, Virology Tampere University Tampere Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Noora","family":"Nurminen","sequence":"additional","affiliation":[{"name":"Faculty of Medicine and Health Technology, Virology Tampere University Tampere Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9211-3288","authenticated-orcid":false,"given":"Lotta","family":"Hallamaa","sequence":"additional","affiliation":[{"name":"Center for Child Health Research Faculty of Medicine and Health Technology and Tampere University Hospital Tampere University Tampere Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rosa","family":"Juuti","sequence":"additional","affiliation":[{"name":"EPID Research Oy Espoo Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Charles","family":"Mangani","sequence":"additional","affiliation":[{"name":"Center for Child Health Research Faculty of Medicine and Health Technology and Tampere University Hospital Tampere University Tampere Finland"},{"name":"School of Public Health and Family Medicine University of Malawi Blantyre Malawi"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kenneth","family":"Maleta","sequence":"additional","affiliation":[{"name":"School of Public Health and Family Medicine University of Malawi Blantyre Malawi"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Heikki","family":"Hy\u00f6ty","sequence":"additional","affiliation":[{"name":"Faculty of Medicine and Health Technology, Virology Tampere University Tampere Finland"},{"name":"Fimlab Laboratories Tampere Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Per","family":"Ashorn","sequence":"additional","affiliation":[{"name":"Center for Child Health Research Faculty of Medicine and Health Technology and Tampere University Hospital Tampere University Tampere Finland"},{"name":"Department of Pediatrics Tampere University Hospital Tampere Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2019,5,27]]},"reference":[{"key":"e_1_2_10_2_1","unstructured":"UNICEF\/WHO\/World Bank Group.Levels and trends in child malnutrition. 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