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Abstract

In 2022, an outbreak with severe bloodstream infections caused by occurred in an adult intensive care unit (ICU) in Hungary. Eight cases, five of whom died, were detected. Initial control measures could not stop the outbreak. We conducted a matched case–control study. In univariable analysis, the cases were more likely to be located around one sink in the ICU and had more medical procedures and medications than the controls, however, the multivariable analysis was not conclusive. Isolates from blood cultures of the cases and the ICU environment were closely related by whole genome sequencing and resistant or tolerant against the quaternary ammonium compound surface disinfectant used in the ICU. Thus, was able to survive in the environment despite regular cleaning and disinfection. The hospital replaced the disinfectant with another one, tightened the cleaning protocol and strengthened hand hygiene compliance among the healthcare workers. Together, these control measures have proved effective to prevent new cases. Our results highlight the importance of multidisciplinary outbreak investigations, including environmental sampling, molecular typing and testing for disinfectant resistance.

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2024-06-27
2024-06-30
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Nosocomial outbreak caused by disinfectant-resistant Serratia marcescens in an adult intensive care unit, Hungary, February to March 2022
<p class="citation"> <span>Citation style for this article:</span> <span class="meta-value authors"> <a href="/search?value1=Adrienn+Hanczvikkel&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Hanczvikkel Adrienn</a>, <a href="/search?value1=%C3%81kos+T%C3%B3th&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Tóth Ákos</a>, <a href="/search?value1=Ir%C3%A9n+Anna++Kopcs%C3%B3n%C3%A9+N%C3%A9meth&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Kopcsóné Németh Irén Anna </a>, <a href="/search?value1=Orsolya+Bazs%C3%B3&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Bazsó Orsolya</a>, <a href="/search?value1=L%C5%91rinc+Z%C3%A1vorszky&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Závorszky Lőrinc</a>, <a href="/search?value1=Lilla+Buzg%C3%B3&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Buzgó Lilla</a>, <a href="/search?value1=Vir%C3%A1g+Lesinszki&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Lesinszki Virág</a>, <a href="/search?value1=D%C3%A1niel+G%C3%B6bhardter&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Göbhardter Dániel</a>, <a href="/search?value1=Erika+Ungv%C3%A1ri&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Ungvári Erika</a>, <a href="/search?value1=Ivelina+Damjanova&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Damjanova Ivelina</a>, <a href="/search?value1=Attila+Er%C5%91ss&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Erőss Attila</a>, <a href="/search?value1=%C3%81gnes+Hajdu&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Hajdu Ágnes</a></span>. Nosocomial outbreak caused by disinfectant-resistant Serratia marcescens in an adult intensive care unit, Hungary, February to March 2022. <a href="/content/ecdc">Euro Surveill.</a> 2024;29(26):pii=2300492. <a href="https://doi.org/10.2807/1560-7917.ES.2024.29.26.2300492" title="doi link" target="_blank">https://doi.org/10.2807/1560-7917.ES.2024.29.26.2300492</a> <span class="ES_Article_citation"> <span class="generated">Received</span>: 12 Sept 2023;&nbsp;&nbsp; <span class="generated">Accepted</span>: 01 Mar 2024 </span> </p>
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