{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T17:03:56Z","timestamp":1786122236907,"version":"build-2736575974"},"reference-count":11,"publisher":"SAGE Publications","issue":"8","license":[{"start":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T00:00:00Z","timestamp":1779926400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Clin Pediatr (Phila)"],"published-print":{"date-parts":[[2026,9]]},"abstract":"<jats:p>Bronchiolitis is the leading cause of hospitalization in infants under 12 months of age, most often due to respiratory syncytial virus (RSV). Following pandemic-related seasonal disruptions and the introduction of RSV immunoprophylaxis, monitoring bronchiolitis trends is essential for public health planning and resource allocation. We conducted an institutional review board approved retrospective cohort study of children aged \u2264 24 months who presented to a tertiary children\u2019s hospital with bronchiolitis during RSV seasons (October-April) from 2018-2019 through 2024-2025, excluding 2020-2022 due to COVID-19-related disruptions. Among 12\u2009741 included patients, 3493 had RSV-positive bronchiolitis. In the 2024-2025 season, bronchiolitis accounted for 6.2% (6.0%-6.4%) of emergency department (ED) visits, up from approximately 4% in the 2018-2023 seasons (Table 1). Despite increased ED presentations, the proportion of bronchiolitis patients requiring hospitalization declined, while intensive care unit (ICU) admission rates remained stable. Respiratory syncytial virus testing among bronchiolitis patients increased from 35.8% (34.0%-38.0%) in 2018-2019 to 59.3% (57.0%-61.0%) in 2024-2025. Trends were consistent in age-stratified and RSV-positive subgroups. Findings highlight a meaningful shift in bronchiolitis epidemiology, underscoring the need for ongoing surveillance and adaptable clinical planning.<\/jats:p>","DOI":"10.1177\/00099228261451909","type":"journal-article","created":{"date-parts":[[2026,5,29]],"date-time":"2026-05-29T05:45:58Z","timestamp":1780033558000},"page":"1010-1014","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Bronchiolitis Post Introduction of RSV Immunoprophylaxis: Shifting Patterns in Pediatric Hospitalizations"],"prefix":"10.1177","volume":"65","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-8474-3281","authenticated-orcid":false,"given":"Carlos","family":"Gonzalez","sequence":"first","affiliation":[{"name":"Creighton University School of Medicine, Phoenix, AZ, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6152-9245","authenticated-orcid":false,"given":"Nirmala P.","family":"Narla","sequence":"additional","affiliation":[{"name":"Creighton University School of Medicine, Phoenix, AZ, USA"},{"name":"Department of Pediatrics, Phoenix Children\u2019s Hospital, Phoenix, AZ, USA"},{"name":"University of Arizona-College of Medicine, Phoenix, AZ, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-8601-2797","authenticated-orcid":false,"given":"Bo","family":"Borch-Christensen","sequence":"additional","affiliation":[{"name":"Creighton University School of Medicine, Phoenix, AZ, USA"},{"name":"Department of Pediatrics, Phoenix Children\u2019s Hospital, Phoenix, AZ, USA"},{"name":"University of Arizona-College of Medicine, Phoenix, AZ, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Richard","family":"Engel","sequence":"additional","affiliation":[{"name":"Creighton University School of Medicine, Phoenix, AZ, USA"},{"name":"Department of Pediatrics, Phoenix Children\u2019s Hospital, Phoenix, AZ, USA"},{"name":"University of Arizona-College of Medicine, Phoenix, AZ, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9847-0662","authenticated-orcid":false,"given":"Jared","family":"Kusma","sequence":"additional","affiliation":[{"name":"Creighton University School of Medicine, Phoenix, AZ, USA"},{"name":"Department of Pediatrics, Phoenix Children\u2019s Hospital, Phoenix, AZ, USA"},{"name":"University of Arizona-College of Medicine, Phoenix, AZ, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2026,5,28]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1542\/pir.2018-0260"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2023-061803"},{"key":"e_1_3_2_4_2","doi-asserted-by":"crossref","unstructured":"Meissner HC. Viral bronchiolitis in children. New Engl J Med. 2016;374(1):62-72. https:\/\/doi.org\/10.1056\/NEJMra1413456","DOI":"10.1056\/NEJMra1413456"},{"key":"e_1_3_2_5_2","doi-asserted-by":"crossref","unstructured":"Van Brusselen D De Troeyer K Ter Haar E et al. Bronchiolitis in COVID\u201119 times: a nearly absent disease. Eur J Pediatr. 2021;180(6):1969-1973. https:\/\/doi.org\/10.1007\/s00431\u2011021\u201103968\u20116","DOI":"10.1007\/s00431-021-03968-6"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1001\/jamahealthforum.2023.1582"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1001\/jama.2025.6495"},{"key":"e_1_3_2_8_2","unstructured":"U.S. Food and Drug Administration. FDA approves new drug to prevent RSV in babies and toddlers. FDA News Releases. Published July 17 2023. Accessed January 28 2026. https:\/\/www.fda.gov\/news-events\/press-announcements\/fda-approves-new-drug-prevent-rsv-babies-and-toddlers"},{"key":"e_1_3_2_9_2","unstructured":"U.S. Food and Drug Administration. FDA approves first vaccine for pregnant individuals to prevent RSV in infants. FDA News Releases. Published August 21 2023. Accessed January 28 2026. https:\/\/www.fda.gov\/news-events\/press-announcements\/fda-approves-first-vaccine-pregnant-individuals-prevent-rsv-infants"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.2807\/1560-7917.ES.2024.29.4.2400033"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.15585\/mmwr.mm7416a1"},{"key":"e_1_3_2_12_2","doi-asserted-by":"crossref","unstructured":"Lambert J. Statistics in brief: how to assess bias in clinical studies. Clin Orthop Relat Res. 2011;469(6):1794-1796. https:\/\/doi.org\/10.1007\/s11999-010-1538-7","DOI":"10.1007\/s11999-010-1538-7"}],"container-title":["Clinical Pediatrics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/00099228261451909","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/00099228261451909","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/00099228261451909","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T08:57:14Z","timestamp":1786093034000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/00099228261451909"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,5,28]]},"references-count":11,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2026,9]]}},"alternative-id":["10.1177\/00099228261451909"],"URL":"https:\/\/doi.org\/10.1177\/00099228261451909","relation":{},"ISSN":["0009-9228","1938-2707"],"issn-type":[{"value":"0009-9228","type":"print"},{"value":"1938-2707","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,5,28]]}}}