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Abstract

Background

Bloodstream infections (BSI) are a public health concern, and infections caused by resistant bacteria further increase the overall BSI burden on healthcare.

Aim

To provide a population-based estimate of BSI incidence and relate this to the forthcoming demographic ageing western population change.

Methods

We retrieved positive blood cultures taken from patients in the Skåne region, southern Sweden, 2006–2019 from the Clinical Microbiology Department database and estimated incidence rates (IR), stratified by age (0–49, 50–64, 65–79, ≥ 80 years), sex, year, and species and described antimicrobial susceptibility for Enterobacterales.

Results

We identified 944,375 blood culture sets, and 129,274 (13.7%) were positive. After deduplication and removal of contaminants, 54,498 separate BSI episodes remained. In total, 30,003 BSI episodes (55%) occurred in men. The overall IR of BSI was 307/100,000 person-years, with an average annual increase of 3.0%. Persons ≥ 80 years had the highest IR, 1781/100,000 person-years, as well as the largest increase. (27%) and (13%) were the most frequent findings. The proportion of Enterobacterales isolates resistant to fluoroquinolones and third generation cephalosporins increased from 8.4% to 13.6%, and 4.9% to 7.3%, (p for trend < 0.001), with the largest increase in the oldest age group.

Conclusion

We report among the highest BSI IRs to date worldwide, with a higher proportion among elderly persons and males, including resistant isolates. Given expected demographic changes, these results indicate a possible substantial future BSI burden, for which preventive measures are needed.

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This work is licensed under a Creative Commons Attribution 4.0 International License.
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2023-03-09
2024-12-28
/content/10.2807/1560-7917.ES.2023.28.10.2200519
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Incidence, aetiology and temporal trend of bloodstream infections in southern Sweden from 2006 to 2019: a population-based study
<p class="citation"> <span>Citation style for this article:</span> <span class="meta-value authors"> <a href="/search?value1=Oskar+Ljungquist&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Ljungquist Oskar</a>, <a href="/search?value1=Adam+Blomstergren&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Blomstergren Adam</a>, <a href="/search?value1=Adam+Merkel&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Merkel Adam</a>, <a href="/search?value1=Torgny+Sunnerhagen&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Sunnerhagen Torgny</a>, <a href="/search?value1=Karin+Holm&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Holm Karin</a>, <a href="/search?value1=Gustav+Torisson&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Torisson Gustav</a></span>. Incidence, aetiology and temporal trend of bloodstream infections in southern Sweden from 2006 to 2019: a population-based study. <a href="/content/ecdc">Euro Surveill.</a> 2023;28(10):pii=2200519. <a href="https://doi.org/10.2807/1560-7917.ES.2023.28.10.2200519" title="doi link" target="_blank">https://doi.org/10.2807/1560-7917.ES.2023.28.10.2200519</a> <span class="ES_Article_citation"> <span class="generated">Received</span>: 30 Jun 2022;&nbsp;&nbsp; <span class="generated">Accepted</span>: 30 Nov 2022 </span> </p>
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