{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T10:53:15Z","timestamp":1791975195099,"version":"4.4.0"},"reference-count":37,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T00:00:00Z","timestamp":1791936000000},"content-version":"vor","delay-in-days":286,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100008091","name":"Golestan University of Medical Sciences","doi-asserted-by":"publisher","award":["112778"],"award-info":[{"award-number":["112778"]}],"id":[{"id":"10.13039\/501100008091","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Parasitology Research"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>\n                      Gorgan, in northern Iran, is a humid region where\n                      <jats:italic>Toxoplasma gondii<\/jats:italic>\n                      is common. The association with psychiatric illness has never been examined there. We measured seroprevalence in psychiatric inpatients and matched controls, quantified it for each major DSM\u20105 diagnostic category, and identified local risk factors for infection.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Method<\/jats:title>\n                    <jats:p>\n                      A case\u2013control study was conducted with 100 psychiatric inpatients and 100 healthy controls, frequency\u2010matched 1:1 on sex and 5\u2010year age stratum. Diagnoses were recorded as free text at discharge by the attending psychiatrists under DSM\u20105 criteria and were mapped to six categories using rules fixed in advance. Sera were tested for anti\u2010\n                      <jats:italic>T<\/jats:italic>\n                      .\n                      <jats:italic>gondii<\/jats:italic>\n                      IgG and IgM by ELISA. Associations were estimated by logistic regression, with secondary analyses comparing each diagnostic category with the controls.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Anti\u2010\n                      <jats:italic>T<\/jats:italic>\n                      .\n                      <jats:italic>gondii<\/jats:italic>\n                      IgG seroprevalence was 39.0% in patients and 47.0% in controls (OR = 0.721, 95% CI: 0.411\u20131.265,\n                      <jats:italic>p<\/jats:italic>\n                      = 0.254; adjusted for the matching variables, OR = 0.668, 95% CI: 0.359\u20131.240,\n                      <jats:italic>p<\/jats:italic>\n                      = 0.201); IgM positivity was rare (1.0% vs. 0%). No diagnostic category differed from controls. Seroprevalence was 38.9% in schizophrenia spectrum and other psychotic disorders (\n                      <jats:italic>n<\/jats:italic>\n                      = 18; OR = 0.73), 34.8% in bipolar and related disorders (\n                      <jats:italic>n<\/jats:italic>\n                      = 23; OR = 0.62), 36.4% in depressive disorders (\n                      <jats:italic>n<\/jats:italic>\n                      = 22; OR = 0.66), and 57.9% in substance\u2010 or medication\u2010induced disorders (\n                      <jats:italic>n<\/jats:italic>\n                      = 19; OR = 1.52). Heterogeneity across categories was not significant (\n                      <jats:italic>p<\/jats:italic>\n                      = 0.533). Psychiatric status did not predict seropositivity (aOR = 0.85, 95% CI: 0.42\u20131.70). Age was the only consistent independent predictor (aOR = 1.08 per year, 95% CI: 1.04\u20131.11,\n                      <jats:italic>p<\/jats:italic>\n                      &lt; 0.001), seroprevalence rising from 5.0% at 20 years or younger to 72.2% above age 50.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Latent toxoplasmosis was not associated with psychiatric disorder overall or within any diagnostic category. Seroprevalence was governed principally by cumulative age\u2010related exposure. These data add to a growing set of null and inverse reports from high\u2010endemicity settings and indicate that the epidemiological expression of this association is context\u2010dependent.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1155\/japr\/2530719","type":"journal-article","created":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T10:32:08Z","timestamp":1791973928000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Seroepidemiology of\n                    <i>Toxoplasma gondii<\/i>\n                    Infection in Psychiatric Inpatients and Healthy Controls in North Iran: A Case\u2013Control Study"],"prefix":"10.1155","volume":"2026","author":[{"given":"Hamidreza","family":"Zakerzadeh Khoshroudi","sequence":"first","affiliation":[{"name":"Student Research Committee Golestan University of Medical Sciences  Gorgan Golestan Iran  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lums.ac.ir"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5805-3074","authenticated-orcid":false,"given":"Farideh","family":"Tohidi","sequence":"additional","affiliation":[{"name":"Laboratory Sciences Research Center Golestan University of Medical Sciences  Gorgan Golestan Iran  goums.ac.ir"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aieneh","family":"Hagieh Pangh","sequence":"additional","affiliation":[{"name":"Parasitology and Mycology Lab School of Medicine Golestan University of Medical Sciences  Gorgan Golestan Iran  goums.ac.ir"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3298-0432","authenticated-orcid":false,"given":"Seyed Mohammad","family":"Mousavi","sequence":"additional","affiliation":[{"name":"Research Center for Hydatid Disease Kerman University of Medical Sciences  Kerman Kerman Iran  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