Chlamydia trachomatis Infections: A Rapid Decrease in Denmark from 2022 to 2024 is Driven by the Young Population

Authors

  • Thomas Roland Pedersen Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark https://orcid.org/0000-0002-0997-1503
  • Kirsten Salado-Rasmussen Department of Dermato-venereology, Bispebjerg University Hospital, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
  • Steen Hoffmann Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
  • Maria Wessman Department of Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Denmark
  • Jørgen Skov Jensen Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark https://orcid.org/0000-0002-7464-7435

DOI:

https://doi.org/10.2340/actadv.v105.43603

Keywords:

Public health, chlamydia, gonorrhoea, Sexually transmitted infections, sexually transmitted infections, Public health surveillance

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References

Chlamydia fact sheet, World Health Organization (WHO), 2025. Available from: https://www.who.int/news-room/fact-sheets/detail/chlamydia

Annual report on Mycoplasma genitalium infections in Denmark, 2023. 2024. Available from: https://www.ssi.dk/sygdomme-beredskab-og-forskning/sygdomsovervaagning/m/mycoplasma-genitalium-opgoerelse-over-forekomst-og-antibiotikaresistens-2011_2023

Lind I, Bollerup AC, Farholt S, Hoffmann S. Laboratory -surveillance of urogenital Chlamydia trachomatis infections in Denmark 1988–2007. Scand J Infect Dis 2009; 41: 334–340. DOI: https://doi.org/10.1080/00365540902810443

Voldstedlund M, Haarh M, Mølbak K; MiBa Board of Representatives. Representatives. The Danish Microbiology Database (MiBa) 2010 to 2013. Euro Surveill 2014; 19: 20667. DOI: https://doi.org/10.2807/1560-7917.ES2014.19.1.20667

Pedersen CB. The Danish Civil Registration System. Scand J Public Health 2011; 39: 22–25.

https://doi.org/10.1177/1403494810387965 DOI: https://doi.org/10.1177/1403494810387965

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Annual report on Neisseria gonorrhoeae infections in Denmark, 2023. 2024. Available from: https://www.ssi.dk/sygdomme-beredskab-og-forskning/sygdomsovervaagning/g/gonorre---opgoerelse-over-sygdomsforekomst-2023

Medstat, Sundhedsdatastyrelsen. 2025. Available from: https://medstat.dk/.

Danskernes sundhed, Sundhedsstyrelsen 2023. Available from: https://www.danskernessundhed.dk/Baggrund.html.

Health Protection Surveillance Centre, Ireland. 2025. Available from: https://www.hpsc.ie/a-z/sexuallytransmittedinfections/publications/stireports/HIV,_mpox_&_STI_trends_in_Ireland_Report_Website_Week1-52%202024.pdf.

Folkhalsomyndigheten, Sweden. 2025. Available from: https://www.folkhalsomyndigheten.se/folkhalsorapportering-statistik/statistik-a-o/sjukdomsstatistik/klamydiainfektion/?year%5B%5D=.

ECDC annual epidemiological report 2023. 2025. Available from: https://www.ecdc.europa.eu/en/publications-data/chlamydia-annual-epidemiological-report-2023.

Published

2025-07-01

How to Cite

Pedersen, T. R., Salado-Rasmussen, K., Hoffmann, S., Wessman, M., & Skov Jensen, J. (2025). Chlamydia trachomatis Infections: A Rapid Decrease in Denmark from 2022 to 2024 is Driven by the Young Population. Acta Dermato-Venereologica, 105, adv43603. https://doi.org/10.2340/actadv.v105.43603