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Nationwide Observational Case–Control Study of Risk Factors for Aerococcus Bloodstream Infections, Sweden

Walles, John LU orcid ; Inghammar, Malin LU ; Rasmussen, Magnus LU orcid and Sunnerhagen, Torgny LU orcid (2025) In Emerging Infectious Diseases 31(5). p.887-898
Abstract
Risk factors for developing bloodstream infections (BSIs) caused by Aerococcus bacteria remain insufficiently examined. In this nationwide case–control study in Sweden, 19 of 23 clinical microbiological laboratories identified patients who had aerococcal BSIs during 2012–2016. We compared each of those index patients with 4 controls matched for age, sex, and county of residence. Overall, 588 episodes of aerococcal BSI occurred over 39.6 million person-years, corresponding to an average incidence of 1.48/100,000 person-years (95% CI 1.37–1.60/100,000 person-years). Most infections developed in men >65 years of age. Aerococcal BSI was associated with neurologic (adjusted odds ratio 2.89 [95% CI 2.26–3.70]) and urologic (adjusted odds... (More)
Risk factors for developing bloodstream infections (BSIs) caused by Aerococcus bacteria remain insufficiently examined. In this nationwide case–control study in Sweden, 19 of 23 clinical microbiological laboratories identified patients who had aerococcal BSIs during 2012–2016. We compared each of those index patients with 4 controls matched for age, sex, and county of residence. Overall, 588 episodes of aerococcal BSI occurred over 39.6 million person-years, corresponding to an average incidence of 1.48/100,000 person-years (95% CI 1.37–1.60/100,000 person-years). Most infections developed in men >65 years of age. Aerococcal BSI was associated with neurologic (adjusted odds ratio 2.89 [95% CI 2.26–3.70]) and urologic (adjusted odds ratio 2.15 [95% CI 1.72—2.68]) conditions and previous hospitalization or infection treatment. Our findings support the previously observed predilection for aerococcal BSIs developing in elderly men with urinary tract disorders. Awareness of Aerococcus spp. in patients, especially elderly men, will be needed to manage invasive infections. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Emerging Infectious Diseases
volume
31
issue
5
pages
887 - 898
publisher
Centers for Disease Control and Prevention (CDC)
external identifiers
  • scopus:105004227592
ISSN
1080-6040
DOI
10.3201/eid3105.240424
language
English
LU publication?
yes
id
d838959e-82d8-4420-ada9-f9dab97eaea7
alternative location
https://wwwnc.cdc.gov/eid/article/31/5/24-0424_intro.htm
date added to LUP
2025-04-26 09:18:21
date last changed
2025-06-28 04:01:42
@article{d838959e-82d8-4420-ada9-f9dab97eaea7,
  abstract     = {{Risk factors for developing bloodstream infections (BSIs) caused by Aerococcus bacteria remain insufficiently examined. In this nationwide case–control study in Sweden, 19 of 23 clinical microbiological laboratories identified patients who had aerococcal BSIs during 2012–2016. We compared each of those index patients with 4 controls matched for age, sex, and county of residence. Overall, 588 episodes of aerococcal BSI occurred over 39.6 million person-years, corresponding to an average incidence of 1.48/100,000 person-years (95% CI 1.37–1.60/100,000 person-years). Most infections developed in men >65 years of age. Aerococcal BSI was associated with neurologic (adjusted odds ratio 2.89 [95% CI 2.26–3.70]) and urologic (adjusted odds ratio 2.15 [95% CI 1.72—2.68]) conditions and previous hospitalization or infection treatment. Our findings support the previously observed predilection for aerococcal BSIs developing in elderly men with urinary tract disorders. Awareness of Aerococcus spp. in patients, especially elderly men, will be needed to manage invasive infections.}},
  author       = {{Walles, John and Inghammar, Malin and Rasmussen, Magnus and Sunnerhagen, Torgny}},
  issn         = {{1080-6040}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{5}},
  pages        = {{887--898}},
  publisher    = {{Centers for Disease Control and Prevention (CDC)}},
  series       = {{Emerging Infectious Diseases}},
  title        = {{Nationwide Observational Case–Control Study of Risk Factors for Aerococcus              Bloodstream Infections, Sweden}},
  url          = {{https://lup.lub.lu.se/search/files/217937340/24-0424-1.pdf}},
  doi          = {{10.3201/eid3105.240424}},
  volume       = {{31}},
  year         = {{2025}},
}