ArticleInfluenza and other respiratory viruses2024
Effectiveness of Original Monovalent and Bivalent COVID-19 Vaccines Against COVID-19-Associated Hospitalization and Severe In-Hospital Outcomes Among Adults in the United States, September 2022-August 2023.
Article in Influenza and other respiratory viruses, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Immune correlates analysis in NextCOVE trial for a next-generation mRNA-1283 COVID-19 vaccine.Human vaccines & immunotherapeutics · 2026Trial
- COVID-19 Antiviral Treatment: Examining Knowledge, Access, Trust in Sources of Information and Willingness to Use Among Essential Workers: A Cross-Sectional Survey of Cohort Participants.Health science reports · 2026Article
- Effectiveness of Updated 2023-2024 (Monovalent XBB.1.5) COVID-19 Vaccination Against SARS-CoV-2 Omicron XBB and BA.2.86/JN.1 Lineage Hospitalization and a Comparison of Clinical Severity-IVY Network, 26 Hospitals, 18 October 2023-9 March 2024.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2026Article
- Estimated Effectiveness of 2024-2025 COVID-19 Vaccination Against Severe COVID-19.JAMA network open · 2026Article
- Effectiveness of 2024-2025 COVID-19 Vaccination Against COVID-19 Hospitalization and Severe In-Hospital Outcomes - IVY Network, 26 Hospitals, September 1, 2024-April 30, 2025.medRxiv : the preprint server for health sciences · 2025Article
- Estimated 2023-2024 COVID-19 Vaccine Effectiveness in Adults.JAMA network open · 2025Article
- Interim Estimates of 2024-2025 COVID-19 Vaccine Effectiveness Among Adults Aged ≥18 Years - VISION and IVY Networks, September 2024-January 2025.MMWR. Morbidity and mortality weekly report · 2025Article
- The evolving landscape of COVID-19: factors associated with in-hospital COVID-19 related mortality during the 2023-2024 phase of JN.1 subvariant dominance.BMC infectious diseases · 2025Article
- Effectiveness of Updated 2023-2024 (Monovalent XBB.1.5) COVID-19 Vaccination Against SARS-CoV-2 Omicron XBB and BA.2.86/JN.1 Lineage Hospitalization and a Comparison of Clinical Severity - IVY Network, 26 Hospitals, October 18, 2023-March 9, 2024.medRxiv : the preprint server for health sciences · 2024Article
- Interim Effectiveness of Updated 2023-2024 (Monovalent XBB.1.5) COVID-19 Vaccines Against COVID-19-Associated Emergency Department and Urgent Care Encounters and Hospitalization Among Immunocompetent Adults Aged ≥18 Years - VISION and IVY Networks, September 2023-January 2024.MMWR. Morbidity and mortality weekly report · 2024Article
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53 authors.
Funding
Abstract
backgroundAssessments of COVID-19 vaccine effectiveness are needed to monitor the protection provided by updated vaccines against severe COVID-19. We evaluated the effectiveness of original monovalent and bivalent (ancestral strain and Omicron BA.4/5) COVID-19 vaccination against COVID-19-associated hospitalization and severe in-hospital outcomes.
methodsDuring September 8, 2022 to August 31, 2023, adults aged ≥ 18 years hospitalized with COVID-19-like illness were enrolled at 26 hospitals in 20 US states. Using a test-negative case-control design, we estimated vaccine effectiveness (VE) with multivariable logistic regression adjusted for age, sex, race/ethnicity, admission date, and geographic region.
resultsAmong 7028 patients, 2924 (41.6%) were COVID-19 case patients, and 4104 (58.4%) were control patients. Compared to unvaccinated patients, absolute VE against COVID-19-associated hospitalization was 6% (-7%-17%) for original monovalent doses only (median time since last dose [IQR] = 421 days [304-571]), 52% (39%-61%) for a bivalent dose received 7-89 days earlier, and 13% (-10%-31%) for a bivalent dose received 90-179 days earlier. Absolute VE against COVID-19-associated invasive mechanical ventilation or death was 51% (34%-63%) for original monovalent doses only, 61% (35%-77%) for a bivalent dose received 7-89 days earlier, and 50% (11%-71%) for a bivalent dose received 90-179 days earlier.
conclusionBivalent vaccination provided protection against COVID-19-associated hospitalization and severe in-hospital outcomes within 3 months of receipt, followed by a decline in protection to a level similar to that remaining from previous original monovalent vaccination by 3-6 months. These results underscore the benefit of remaining up to date with recommended COVID-19 vaccines.
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