Interventions used to reduce infectious aerosol concentrations in hospitals-a review.

EClinicalMedicine · 2025 · PMC11718292 · PMID 39802303

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almost significantno p-value reported

19 found an almost significant trend for reductions in pneumonia in the presence of HEPA filters, and therefore recommended where possible to use HEPA filters in rooms with immunocompromised patients.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.