{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T05:02:42Z","timestamp":1791608562319,"version":"4.3.4"},"reference-count":41,"publisher":"Microbiology Society","issue":"5","license":[{"start":{"date-parts":[[2026,5,7]],"date-time":"2026-05-07T00:00:00Z","timestamp":1778112000000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000268","name":"Biotechnology and Biological Sciences Research Council","doi-asserted-by":"crossref","award":["BB\/S011269\/1"],"award-info":[{"award-number":["BB\/S011269\/1"]}],"id":[{"id":"10.13039\/501100000268","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,5,7]]},"abstract":"<jats:p>\n                    Poultry production is rapidly expanding across South and Southeast Asia to meet rising demand for human consumption.\n                    <jats:italic>Campylobacter jejuni<\/jats:italic>\n                    and\n                    <jats:italic>Campylobacter coli<\/jats:italic>\n                    are the leading causes of human bacterial gastroenteritis worldwide, with poultry serving as a primary reservoir posing significant risks to food safety and public health. This study investigated the genetic diversity of\n                    <jats:italic>C. jejuni<\/jats:italic>\n                    and\n                    <jats:italic>C. coli<\/jats:italic>\n                    isolates from chicken sampled in farms, along with markets (live bird markets and shops) and slaughtering facilities from Bangladesh, India, Sri Lanka and Vietnam. Core-genome multilocus sequence typing revealed strong geographical clustering of\n                    <jats:italic>C. coli<\/jats:italic>\n                    isolates, dominated by ST-828 clonal complex lineages largely confined within national borders. In contrast,\n                    <jats:italic>C. jejuni<\/jats:italic>\n                    isolates clustered more diffusely into multiple clonal complexes (ST-21, ST-45 and ST-257) that were shared between countries, reflecting greater ecological adaptability and frequent gene flow. Permutational multivariate ANOVA (PERMANOVA) supported these patterns; geography explained more genomic variation for\n                    <jats:italic>C. coli<\/jats:italic>\n                    than\n                    <jats:italic>C. jejuni,<\/jats:italic>\n                    while poultry breed type and production site contributed little overall. An exception was Sri Lanka, where\n                    <jats:italic>C. jejuni<\/jats:italic>\n                    showed an apparent ecological segregation between markets and slaughtering facilities, albeit with a limited within-country sample size. Genomic SNP-based analysis highlighted recombination as a significant evolutionary force maintaining distinct country-specific lineages in\n                    <jats:italic>C. coli<\/jats:italic>\n                    , while supporting a broader geographic mixing of\n                    <jats:italic>C. jejuni<\/jats:italic>\n                    . Pangenome analyses were consistent with more geographically structured accessory profiles in\n                    <jats:italic>C. coli<\/jats:italic>\n                    and a more dispersed pattern in\n                    <jats:italic>C. jejuni<\/jats:italic>\n                    , compatible with broader regional dissemination. Comparison with global reference genomes showed these isolates clustered with strains from diverse host species, highlighting the ability of\n                    <jats:italic>C. jejuni<\/jats:italic>\n                    to occupy multiple ecological niches and spread across borders. The distinct patterns of spatially clustered and dispersed lineage distributions for\n                    <jats:italic>C. coli<\/jats:italic>\n                    and\n                    <jats:italic>C. jejuni<\/jats:italic>\n                    , respectively, highlight the importance of understanding species-specific transmission dynamics to inform targeted intervention strategies. This understanding underscores the need for interventions along poultry production and distribution networks that can effectively mitigate the risks associated with campylobacteriosis.\n                  <\/jats:p>","DOI":"10.1099\/mgen.0.001706","type":"journal-article","created":{"date-parts":[[2026,5,7]],"date-time":"2026-05-07T16:15:32Z","timestamp":1778170532000},"source":"Crossref","is-referenced-by-count":1,"title":["Geographic clustering and population structures of Campylobacter jejuni and Campylobacter coli in South and Southeast Asian poultry systems"],"prefix":"10.1099","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3478-597X","authenticated-orcid":false,"given":"Burhan","family":"Lehri","sequence":"first","affiliation":[{"name":"Department of Infection Biology (DIB), London School of Hygiene and Tropical Medicine (LSHTM), London, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Le Thi Hong","family":"Nhung","sequence":"additional","affiliation":[{"name":"National Institute of Veterinary Research (NIVR), Ha Noi, Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Keya","family":"Ghosh","sequence":"additional","affiliation":[{"name":"Chattogram Veterinary and Animal Sciences University, Chittagong, Bangladesh"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tahia Ahmed","family":"Logno","sequence":"additional","affiliation":[{"name":"Chattogram Veterinary and Animal Sciences University, Chittagong, Bangladesh"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahamudul","family":"Hasan","sequence":"additional","affiliation":[{"name":"Transboundary Animal Disease Research Center, Bangladesh Livestock Research Institute (BLRI), Savar, Bangladesh"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G.","family":"Weerasooriya","sequence":"additional","affiliation":[{"name":"Veterinary Research Institute, Gannoruwa, Peradeniya, Sri Lanka"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.A.R.","family":"Priyantha","sequence":"additional","affiliation":[{"name":"Veterinary Research Institute, Gannoruwa, Peradeniya, Sri Lanka"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P.S.","family":"De Alwis","sequence":"additional","affiliation":[{"name":"Veterinary Research Institute, Gannoruwa, Peradeniya, Sri Lanka"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Venkateshprabhu","family":"Janagaraj","sequence":"additional","affiliation":[{"name":"The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zayina Zondervenni","family":"Manoharan","sequence":"additional","affiliation":[{"name":"The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, 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