{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T23:55:42Z","timestamp":1790898942585,"version":"4.1.0"},"reference-count":30,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T00:00:00Z","timestamp":1790812800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T00:00:00Z","timestamp":1790812800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Influenza Resp Viruses"],"published-print":{"date-parts":[[2026,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>In 2024, a severe outbreak caused by human adenovirus type 7d (HAdV\u20107) occurred in Finnish military garrisons. Molecular typing was implemented to support outbreak control. The aim of this study was to determine adenovirus types circulating in Finnish garrisons during 2013\u20132023 by retrospective surveillance and to review earlier findings to better understand factors contributing to the 2024 outbreak.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Adenovirus\u2010positive respiratory samples collected through routine surveillance (2013\u20132023) and enhanced surveillance (2024\u20132025) were typed using type\u2010specific PCR assays targeting types 3, 4, 7, 11, 14, 16, and 21. Whole\u2010genome sequencing was performed on 11 selected samples. Index case interviews were conducted among conscripts infected with HAdV\u20107 in late 2023.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      During 2013\u20132023, among 497 typed samples, HAdV\u20104 was most common (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009446; 89.7%), followed by HAdV\u20103 (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200925; 5%). Other types detected were HAdV\u201021 (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200911; 2.2%), HAdV\u20107 (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u20096; 1.2%), and HAdV\u201011 (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u20091; 0.2%). HAdV\u20104 was predominant in 2013\u20132017 and HAdV\u20103 in 2018\u20132019. Between February 2024 and June 2025, 1692 adenovirus\u2010positive respiratory samples were typed. The adenovirus types detected were HAdV\u20104 (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u20091133; 67%), HAdV\u20107 (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009440; 26%), co\u2010detection of HAdV\u20104 and \u20107 (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200970; 4.1%), and HAdV\u201014 (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u20091; 0.1%). Epidemiological investigation and whole\u2010genome sequencing data revealed that the adenovirus associated with the 2024 outbreak (HAdV\u20107d) was already circulating in Finnish garrisons in 2023.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The severity of the 2024 outbreak may reflect limited prior circulation of HAdV\u20107 in Finland. Although HAdV\u20107 continued to circulate among conscripts in 2025, the severity of the epidemic subsided, possibly due to effective preventative measures guided by active surveillance.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/irv.70329","type":"journal-article","created":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T23:31:12Z","timestamp":1790897472000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Molecular Characterization of Human Adenoviruses Before and After a Severe HAdV\u20107 Military Outbreak in Finland in 2024"],"prefix":"10.1111","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-6113-3645","authenticated-orcid":false,"given":"Niko","family":"Tervo","sequence":"first","affiliation":[{"name":"Department of Public Health Finnish Institute for Health and Welfare (THL)  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3881-5208","authenticated-orcid":false,"given":"Marjaana","family":"Pitk\u00e4paasi","sequence":"additional","affiliation":[{"name":"Department of Public Health Finnish Institute for Health and Welfare (THL)  Helsinki Finland"},{"name":"Centre for Military Medicine Finnish Defence Forces  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2772-2786","authenticated-orcid":false,"given":"Pilvi","family":"Hepo\u2010oja","sequence":"additional","affiliation":[{"name":"Department of Public Health Finnish Institute for Health and Welfare (THL)  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hanna","family":"Jarva","sequence":"additional","affiliation":[{"name":"HUS Diagnostic Center, Department of Clinical Microbiology Helsinki University Hospital and University of Helsinki  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Katz","sequence":"additional","affiliation":[{"name":"Department of Public Health Finnish Institute for Health and Welfare (THL)  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Erika","family":"Lindh","sequence":"additional","affiliation":[{"name":"Department of Public Health Finnish Institute for Health and Welfare (THL)  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2288-8106","authenticated-orcid":false,"given":"Richard","family":"Lundell","sequence":"additional","affiliation":[{"name":"Centre for Military Medicine Finnish Defence Forces  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Minna","family":"Paloniemi","sequence":"additional","affiliation":[{"name":"Fimlab Laboratories, Department of Microbiology Tampere University, Faculty of Medicine and Health Technology  Tampere Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laura","family":"Savolainen","sequence":"additional","affiliation":[{"name":"NordLab Joint County Authority for Wellbeing Services  Oulu Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carita","family":"Savolainen\u2010Kopra","sequence":"additional","affiliation":[{"name":"Department of Public Health Finnish Institute for Health and Welfare (THL)  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Niina","family":"Ikonen","sequence":"additional","affiliation":[{"name":"Department of Public Health Finnish Institute for Health and Welfare (THL)  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simo","family":"Nikkari","sequence":"additional","affiliation":[{"name":"Centre for Military Medicine Finnish Defence Forces  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,1]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1099\/jgv.0.001721"},{"issue":"9","key":"e_1_2_11_3_1","doi-asserted-by":"crossref","DOI":"10.1128\/jcm.00836-22","article-title":"Adenovirus Infections: New Insights for the Clinical Laboratory. 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