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Importance: Respiratory syncytial virus (RSV) is a leading cause of acute respiratory tract infections among adults and is estimated to cause approximately 159 000 hospitalizations among adults aged 65 years and older in the US each year. Estimates of hospitalization among adults with outpatient medically attended RSV (MA-RSV) infections are required to design interventional studies that aim to prevent hospitalization.
Objective: To assess absolute risk of 28-day, all-cause hospitalization following outpatient MA-RSV infections in adults.
Design, Setting, And Participants: In this cohort study, data from 3 different deidentified databases containing electronic health records (EHR) linked to closed claims data (Optum's deidentified Integrated Claims-Clinical dataset, TriNetX Linked, and Veradigm Network EHR [VNEHR] database linked with claims) were analyzed separately across 6 RSV years (October 1, 2016, to September 30, 2022) in adults with commercial or government insurance. Outpatient (eg, clinics and emergency departments) MA-RSV infections were identified based on clinical laboratory data or RSV-specific International Statistical Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) diagnosis codes. Data were analyzed from March 2023 to April 2024.
Main Outcomes And Measures: The main outcome was all-cause 28-day hospitalization following outpatient MA-RSV infections among all adults and a high-risk subgroup (defined as age ≥65 years or with asthma, chronic obstructive pulmonary disease [COPD], or congestive heart failure [CHF]).
Results: In this cohort study of 67 239 MA-RSV infections in adults (2771 from Optum, 7442 from TriNetX, and 57 026 from VNEHR), most occurred among females (62%-67%) and comorbidity prevalences were 20.0% to 30.5% for COPD, 14.6% to 24.4% for CHF, 14.6% to 24.4% for asthma; 14.0% to 54.5% of individuals were aged 65 years or older. The proportion hospitalized was 6.2% (95% CI, 5.3%-7.1%) in Optum, 6.0% (95% CI, 5.4% to 6.5%) in TriNetX, and 4.5% (95% CI, 4.3%-4.6%) in VNEHR. Among the high-risk subgroup, the proportion hospitalized was 7.6% (95% CI, 6.5%-8.9%) in Optum, 8.5% (95% CI, 7.6%-9.4%) in TriNetX, and 6.5% (95% CI, 6.2%-6.8%) in VNEHR.
Conclusions And Relevance: In this cohort study of adults with outpatient MA-RSV infections from 3 large deidentified US databases across 6 RSV seasons, approximately 1 in 20 adults experienced all-cause hospitalization within 28 days. The results of this study highlight the public health need for RSV prevention and treatment.
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Source |
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11577139 | PMC |
http://dx.doi.org/10.1001/jamanetworkopen.2024.46010 | DOI Listing |
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