Neuroinvasive Bacillus cereus Infection in Immunocompromised Hosts : Epidemiologic Investigation of 5 Patients With Acute Myeloid Leukemia
© The Author(s) 2024. Published by Oxford University Press on behalf of Infectious Diseases Society of America..
Background: Bacillus cereus is a ubiquitous gram-positive rod-shaped bacterium that can cause sepsis and neuroinvasive disease in patients with acute leukemia or neutropenia.
Methods: A single-center retrospective review was conducted to evaluate patients with acute leukemia, positive blood or cerebrospinal fluid test results for B cereus, and abnormal neuroradiographic findings between January 2018 and October 2022. Infection control practices were observed, environmental samples obtained, a dietary case-control study completed, and whole genome sequencing performed on environmental and clinical Bacillus isolates.
Results: Five patients with B cereus neuroinvasive disease were identified. All patients had acute myeloid leukemia (AML), were receiving induction chemotherapy, and were neutropenic. Neurologic involvement included subarachnoid or intraparenchymal hemorrhage or brain abscess. All patients were treated with ciprofloxacin and survived with limited or no neurologic sequelae. B cereus was identified in 7 of 61 environmental samples and 1 of 19 dietary protein samples-these were unrelated to clinical isolates via sequencing. No point source was identified. Ciprofloxacin was added to the empiric antimicrobial regimen for patients with AML and prolonged or recurrent neutropenic fevers; no new cases were identified in the ensuing year.
Conclusions: B cereus is ubiquitous in the hospital environment, at times leading to clusters with unrelated isolates. Fastidious infection control practices addressing a range of possible exposures are warranted, but their efficacy is unknown and they may not be sufficient to prevent all infections. Thus, including B cereus coverage in empiric regimens for patients with AML and persistent neutropenic fever may limit the morbidity of this pathogen.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:11 |
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| Enthalten in: |
Open forum infectious diseases - 11(2024), 3 vom: 04. März, Seite ofae048 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Little, Jessica S [VerfasserIn] |
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| Links: |
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| Themen: |
Acute myeloid leukemia |
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| Anmerkungen: |
Date Revised 29.03.2024 published: Electronic-eCollection Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1093/ofid/ofae048 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM369244885 |
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| 100 | 1 | |a Little, Jessica S |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Neuroinvasive Bacillus cereus Infection in Immunocompromised Hosts |b Epidemiologic Investigation of 5 Patients With Acute Myeloid Leukemia |
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| 500 | |a Date Revised 29.03.2024 | ||
| 500 | |a published: Electronic-eCollection | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a © The Author(s) 2024. Published by Oxford University Press on behalf of Infectious Diseases Society of America. | ||
| 520 | |a Background: Bacillus cereus is a ubiquitous gram-positive rod-shaped bacterium that can cause sepsis and neuroinvasive disease in patients with acute leukemia or neutropenia | ||
| 520 | |a Methods: A single-center retrospective review was conducted to evaluate patients with acute leukemia, positive blood or cerebrospinal fluid test results for B cereus, and abnormal neuroradiographic findings between January 2018 and October 2022. Infection control practices were observed, environmental samples obtained, a dietary case-control study completed, and whole genome sequencing performed on environmental and clinical Bacillus isolates | ||
| 520 | |a Results: Five patients with B cereus neuroinvasive disease were identified. All patients had acute myeloid leukemia (AML), were receiving induction chemotherapy, and were neutropenic. Neurologic involvement included subarachnoid or intraparenchymal hemorrhage or brain abscess. All patients were treated with ciprofloxacin and survived with limited or no neurologic sequelae. B cereus was identified in 7 of 61 environmental samples and 1 of 19 dietary protein samples-these were unrelated to clinical isolates via sequencing. No point source was identified. Ciprofloxacin was added to the empiric antimicrobial regimen for patients with AML and prolonged or recurrent neutropenic fevers; no new cases were identified in the ensuing year | ||
| 520 | |a Conclusions: B cereus is ubiquitous in the hospital environment, at times leading to clusters with unrelated isolates. Fastidious infection control practices addressing a range of possible exposures are warranted, but their efficacy is unknown and they may not be sufficient to prevent all infections. Thus, including B cereus coverage in empiric regimens for patients with AML and persistent neutropenic fever may limit the morbidity of this pathogen | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Bacillus cereus | |
| 650 | 4 | |a acute myeloid leukemia | |
| 650 | 4 | |a immunocompromised | |
| 650 | 4 | |a infection control investigation | |
| 650 | 4 | |a neuroinvasive infection | |
| 700 | 1 | |a Coughlin, Cassie |e verfasserin |4 aut | |
| 700 | 1 | |a Hsieh, Candace |e verfasserin |4 aut | |
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| 700 | 1 | |a Huang, Wan Yi |e verfasserin |4 aut | |
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