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Abstract

Finland experienced three invasive pneumococcal disease (IPD) outbreaks among shipyard workers at the same shipyard, in 2019, 2023 and 2025. During the latest outbreak (30 April–6 June 2025), 13 cases were reported, with six confirmed. All five isolates from blood culture-positive cases were serotype 4 – sequence type 801. These were nearly indistinguishable from three isolates from the 2019 outbreak, nine Finnish IPD surveillance isolates and isolates of a 2019 Norwegian shipyard outbreak. We found an association with welding.

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/content/10.2807/1560-7917.ES.2025.30.41.2500758
2025-10-16
2025-11-11
/content/10.2807/1560-7917.ES.2025.30.41.2500758
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References

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Third Streptococcus pneumoniae disease outbreak involving serotype 4–ST801 in a shipyard, Finland, May to June 2025
<p class="citation"> <span>Citation style for this article:</span> <span class="meta-value authors"> <a href="/search?value1=Maria+Francesca+Manca&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Manca Maria Francesca</a>, <a href="/search?value1=Jaakko+Silvola&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Silvola Jaakko</a>, <a href="/search?value1=Jakub+Czarnecki&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Czarnecki Jakub</a>, <a href="/search?value1=Joana+Sequeira+Neto&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Sequeira Neto Joana</a>, <a href="/search?value1=Mari+Kanerva&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Kanerva Mari</a>, <a href="/search?value1=Heikki+Kaukavuori&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Kaukavuori Heikki</a>, <a href="/search?value1=Ana+Cristina+Gonz%C3%A1lez+P%C3%A9rez&option1=author&noRedirect=true" class="nonDisambigAuthorLink">González Pérez Ana Cristina</a>, <a href="/search?value1=Irmeli+Lindstr%C3%B6m&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Lindström Irmeli</a>, <a href="/search?value1=Heikki+Frilander&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Frilander Heikki</a>, <a href="/search?value1=Mikhail+Fomichev&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Fomichev Mikhail</a>, <a href="/search?value1=Harri+Marttila&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Marttila Harri</a>, <a href="/search?value1=Riitta+Ratia&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Ratia Riitta</a>, <a href="/search?value1=Leif+Lakoma&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Lakoma Leif</a>, <a href="/search?value1=Lotta+Siira&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Siira Lotta</a></span>. Third Streptococcus pneumoniae disease outbreak involving serotype 4–ST801 in a shipyard, Finland, May to June 2025. <a href="/content/ecdc">Euro Surveill.</a> 2025;30(41):pii=2500758. <a href="https://doi.org/10.2807/1560-7917.ES.2025.30.41.2500758" title="doi link" target="_blank">https://doi.org/10.2807/1560-7917.ES.2025.30.41.2500758</a> <span class="ES_Article_citation"> <span class="generated">Received</span>: 30 Sept 2025;&nbsp;&nbsp; <span class="generated">Accepted</span>: 15 Oct 2025 </span> </p>
/content/10.2807/1560-7917.ES.2025.30.41.2500758
/content/10.2807/1560-7917.ES.2025.30.41.2500758
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