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Avian chlamydiosis (AC), primarily caused by\n                    <jats:italic>Chlamydia psittaci<\/jats:italic>\n                    ,\n                    <jats:italic>C. avium<\/jats:italic>\n                    ,\n                    <jats:italic>C. gallinacea<\/jats:italic>\n                    , and\n                    <jats:italic>C. ibidis<\/jats:italic>\n                    , has been documented in over 460 avian species. Qinghai Lake, China\u2019s largest saltwater lake and a critical overwintering site for migratory birds, served as the study area to investigate\n                    <jats:italic>Chlamydia<\/jats:italic>\n                    prevalence in wild birds. Fecal samples from 125 birds revealed an overall\n                    <jats:italic>Chlamydia<\/jats:italic>\n                    spp. infection rate of 28.8% (36\/125), with three species identified:\n                    <jats:italic>C. abortus<\/jats:italic>\n                    (55.6%, 20\/36),\n                    <jats:italic>C. avium<\/jats:italic>\n                    (44.4%, 16\/36), and\n                    <jats:italic>C. psittaci<\/jats:italic>\n                    (13.9%, 5\/36). Phylogenetic analysis through amplification of the 16\u00a0S rRNA (5 samples), IGS-23\u00a0S rRNA (6 samples), and\n                    <jats:italic>ompA<\/jats:italic>\n                    (5 samples) genes revealed that all sequences obtained in this study were assigned to the\n                    <jats:italic>Chlamydiaceae<\/jats:italic>\n                    family. The\n                    <jats:italic>ompA<\/jats:italic>\n                    sequence of\n                    <jats:italic>C. abortus<\/jats:italic>\n                    obtained in this study clustered closely with the reference strain GN6 (CP021996.1) isolated from aborted yak fetuses (\n                    <jats:italic>Bos grunnien<\/jats:italic>\n                    s), a bovid species typically domesticated and endemic to the Qinghai-Tibet Plateau, showing 100% sequence identity. In contrast,\n                    <jats:italic>C. avium ompA<\/jats:italic>\n                    sequences shared 87.40% identity with the reference strain 10DC88. The identical genomic profile of\n                    <jats:italic>C. abortus<\/jats:italic>\n                    between wild birds and domesticated yaks suggests potential cross-species transmission in the Qinghai-Tibetan Plateau, where overlapping habitats of wildlife and livestock may facilitate pathogen exchange. These findings underscore the zoonotic risks posed by\n                    <jats:italic>Chlamydia<\/jats:italic>\n                    species circulating in this ecologically critical region, with implications for the health of local livestock (yaks, Tibetan sheep), human populations, and migratory bird conservation.\n                  <\/jats:p>","DOI":"10.1186\/s13620-025-00314-2","type":"journal-article","created":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T14:17:59Z","timestamp":1761833879000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Molecular prevalence of Chlamydia spp. in wild birds from Qinghai Lake, China"],"prefix":"10.1186","volume":"78","author":[{"given":"Xiaomin","family":"Wu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fan","family":"Lei","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yaqian","family":"Niu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiali","family":"Yu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chao","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Te","family":"Ba","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lin","family":"Liang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,10,30]]},"reference":[{"issue":"3\u20134","key":"314_CR1","doi-asserted-by":"publisher","first-page":"476","DOI":"10.1016\/j.vetmic.2012.01.002","volume":"157","author":"K Sachse","year":"2012","unstructured":"Sachse K, Kuehlewind S, Ruettger A, Schubert E, Rohde G. 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