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Plumb ID, Briggs Hagen M, Wiegand R, Dumyati G, Myers C, Harland KK, Krishnadasan A, James Gist J, Abedi G, Fleming-Dutra KE, Chea N, Lee JE, Kellogg M, Edmundson A, Britton A, Wilson LE, Lovett SA, Ocampo V, Markus TM, Smithline HA, Hou PC, Lee LC, Mower W, Rwamwejo F, Steele MT, Lim SC, Schrading WA, Chinnock B, Beiser DG, Faine B, Haran JP, Nandi U, Chipman AK, LoVecchio F, Eucker S, Femling J, Fuller M, Rothman RE, Curlin ME, Talan DA, Mohr NM. Effectiveness of a bivalent mRNA vaccine dose against symptomatic SARS-CoV-2 infection among U.S. Healthcare personnel, September 2022-May 2023. Vaccine 2024; 42:2543-2552. [PMID: 37973512 PMCID: PMC10994739 DOI: 10.1016/j.vaccine.2023.10.072] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/27/2023] [Accepted: 10/30/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND Bivalent mRNA vaccines were recommended since September 2022. However, coverage with a recent vaccine dose has been limited, and there are few robust estimates of bivalent VE against symptomatic SARS-CoV-2 infection (COVID-19). We estimated VE of a bivalent mRNA vaccine dose against COVID-19 among eligible U.S. healthcare personnel who had previously received monovalent mRNA vaccine doses. METHODS We conducted a case-control study in 22 U.S. states, and enrolled healthcare personnel with COVID-19 (case-participants) or without COVID-19 (control-participants) during September 2022-May 2023. Participants were considered eligible for a bivalent mRNA dose if they had received 2-4 monovalent (ancestral-strain) mRNA vaccine doses, and were ≥67 days after the most recent vaccine dose. We estimated VE of a bivalent mRNA dose using conditional logistic regression, accounting for matching by region and four-week calendar period. We adjusted estimates for age group, sex, race and ethnicity, educational level, underlying health conditions, community COVID-19 exposure, prior SARS-CoV-2 infection, and days since the last monovalent mRNA dose. RESULTS Among 3,647 healthcare personnel, 1,528 were included as case-participants and 2,119 as control-participants. Participants received their last monovalent mRNA dose a median of 404 days previously; 1,234 (33.8%) also received a bivalent mRNA dose a median of 93 days previously. Overall, VE of a bivalent dose was 34.1% (95% CI, 22.6%-43.9%) against COVID-19 and was similar by product, days since last monovalent dose, number of prior doses, age group, and presence of underlying health conditions. However, VE declined from 54.8% (95% CI, 40.7%-65.6%) after 7-59 days to 21.6% (95% CI 5.6%-34.9%) after ≥60 days. CONCLUSIONS Bivalent mRNA COVID-19 vaccines initially conferred approximately 55% protection against COVID-19 among U.S. healthcare personnel. However, protection waned after two months. These findings indicate moderate initial protection against symptomatic SARS-CoV-2 infection by remaining up-to-date with COVID-19 vaccines.
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Affiliation(s)
- Ian D Plumb
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control & Prevention, Atlanta, GA, USA.
| | - Melissa Briggs Hagen
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control & Prevention, Atlanta, GA, USA
| | - Ryan Wiegand
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control & Prevention, Atlanta, GA, USA
| | - Ghinwa Dumyati
- University of Rochester Medical Center, Rochester, NY, USA
| | | | | | | | - Jade James Gist
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control & Prevention, Atlanta, GA, USA
| | - Glen Abedi
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control & Prevention, Atlanta, GA, USA
| | - Katherine E Fleming-Dutra
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control & Prevention, Atlanta, GA, USA
| | - Nora Chea
- National Center for Emerging and Zoonotic Diseases, Centers for Disease Control & Prevention, USA
| | - Jane E Lee
- California Emerging Infections Program, Oakland, CA, USA
| | | | - Alexandra Edmundson
- Connecticut Emerging Infections Program, Yale School of Public Health, CT, USA
| | - Amber Britton
- Georgia Emerging Infections Program and Emory University School of Medicine, Atlanta, GA, USA
| | - Lucy E Wilson
- Maryland Emerging Infections Program, Maryland Department of Health and University of Maryland, Baltimore, MD, USA
| | | | - Valerie Ocampo
- Public Health Division, Oregon Health Authority, OR, USA
| | | | | | - Peter C Hou
- Brigham and Women's Hospital, Boston, MA, USA
| | | | | | | | - Mark T Steele
- University of Missouri-Kansas City, Kansas City, MO, USA
| | - Stephen C Lim
- University Medical Center New Orleans, LSU Health Sciences Center, New Orleans, LA, USA
| | | | | | | | | | - John P Haran
- University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Utsav Nandi
- University of Mississippi Medical Center, Jackson, MS, USA
| | | | | | | | - Jon Femling
- University of New Mexico Health Science Center, USA
| | | | - Richard E Rothman
- Department of Emergency Medicine, Johns Hopkins University, Baltimore, MD, USA
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Plumb ID, Mohr NM, Hagen M, Wiegand R, Dumyati G, Harland KK, Krishnadasan A, Gist JJ, Abedi G, Fleming-Dutra KE, Chea N, Lee J, Barter D, Brackney M, Fridkin SK, Wilson LE, Lovett SA, Ocampo V, Phipps EC, Marcus TM, Smithline HA, Hou PC, Lee LC, Moran GJ, Krebs E, Steele MT, Lim SC, Schrading WA, Chinnock B, Beiser DG, Faine B, Haran JP, Nandi U, Chipman AK, LoVecchio F, Talan DA, Pilishvili T. Effectiveness of a Messenger RNA Vaccine Booster Dose Against Coronavirus Disease 2019 Among US Healthcare Personnel, October 2021-July 2022. Open Forum Infect Dis 2023; 10:ofad457. [PMID: 37799130 PMCID: PMC10549208 DOI: 10.1093/ofid/ofad457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 09/06/2023] [Indexed: 10/07/2023] Open
Abstract
Background Protection against symptomatic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection (coronavirus disease 2019 [COVID-19]) can limit transmission and the risk of post-COVID conditions, and is particularly important among healthcare personnel. However, lower vaccine effectiveness (VE) has been reported since predominance of the Omicron SARS-CoV-2 variant. Methods We evaluated the VE of a monovalent messenger RNA (mRNA) booster dose against COVID-19 from October 2021 to June 2022 among US healthcare personnel. After matching case-participants with COVID-19 to control-participants by 2-week period and site, we used conditional logistic regression to estimate the VE of a booster dose compared with completing only 2 mRNA doses >150 days previously, adjusted for multiple covariates. Results Among 3279 case-participants and 3998 control-participants who had completed 2 mRNA doses, we estimated that the VE of a booster dose against COVID-19 declined from 86% (95% confidence interval, 81%-90%) during Delta predominance to 65% (58%-70%) during Omicron predominance. During Omicron predominance, VE declined from 73% (95% confidence interval, 67%-79%) 14-60 days after the booster dose, to 32% (4%-52%) ≥120 days after a booster dose. We found that VE was similar by age group, presence of underlying health conditions, and pregnancy status on the test date, as well as among immunocompromised participants. Conclusions A booster dose conferred substantial protection against COVID-19 among healthcare personnel. However, VE was lower during Omicron predominance, and waning effectiveness was observed 4 months after booster dose receipt during this period. Our findings support recommendations to stay up to date on recommended doses of COVID-19 vaccines for all those eligible.
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Affiliation(s)
- Ian D Plumb
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Nicholas M Mohr
- Department of Emergency Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Melissa Hagen
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Ryan Wiegand
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Ghinwa Dumyati
- New York State Emerging Infections Program, University of Rochester Medical Center, Rochester, New York, USA
| | - Karisa K Harland
- Department of Emergency Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Anusha Krishnadasan
- Department of Emergency Medicine, Olive View–UCLA Education and Research Institute, Los Angeles, California, USA
| | - Jade James Gist
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Glen Abedi
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Katherine E Fleming-Dutra
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Nora Chea
- National Center for Emerging and Zoonotic Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Jane Lee
- Healthcare-Associated Infections, California Emerging Infections Program, Oakland, California, USA
| | - Devra Barter
- Healthcare-associated Infections / Antimicrobial Resistance Program, Colorado Department of Public Health & Environment, Denver, Colorado, USA
| | - Monica Brackney
- Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, Connecticut, USA
| | - Scott K Fridkin
- Georgia Emerging Infections Program and Emory University School of Medicine, Atlanta, Georgia, USA
| | - Lucy E Wilson
- Maryland Emerging Infections Program, Maryland Department of Health, and University of Maryland,Baltimore County, Baltimore, Maryland, USA
| | - Sara A Lovett
- Infectious Disease Epidemiology, Prevention and Control Divison, Minnesota Department of Health, St. Paul, Minnesota, USA
| | - Valerie Ocampo
- Public Health Division, Oregon Health Authority, Portland, Oregon, USA
| | - Erin C Phipps
- New Mexico Emerging Infections Program, University of New Mexico, Albuquerque, New Mexico, USA
| | - Tiffanie M Marcus
- Department of Health Policy, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Howard A Smithline
- Department of Emergency Medicine, University of Massachusetts Chan Medical School - Baystate, Springfield, Massachusetts, USA
| | - Peter C Hou
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Lilly C Lee
- Emergency Medicine, Jackson Memorial Hospital, Miami, Florida, USA
| | - Gregory J Moran
- David Geffen School of Medicine, UCLA, Los Angeles, California, USA
| | - Elizabeth Krebs
- Emergency Medicine, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Mark T Steele
- Department of Emergency Medicine, University of Missouri–Kansas City, Kansas City, Missouri, USA
| | - Stephen C Lim
- Section of Emergency Medicine, University Medical Center New Orleans, LSU Health Sciences Center, New Orleans, Louisiana, USA
| | - Walter A Schrading
- Department of Emergency Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Brian Chinnock
- Department of Emergency Medicine, University of California San Francisco, Fresno, California, USA
| | - David G Beiser
- Section of Emergency Medicine, University of Chicago, Chicago, Illinois, USA
| | - Brett Faine
- Department of Emergency Medicine, University of Iowa, Iowa City, Iowa, USA
| | - John P Haran
- Department of Emergency Medicine, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Utsav Nandi
- Department of Emergency Medicine, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - Anne K Chipman
- Emergency Department, University of Washington, Seattle, Washington, USA
| | - Frank LoVecchio
- Emergency Medicine, Valleywise Health Medical Center, Phoenix, Arizona, USA
| | - David A Talan
- David Geffen School of Medicine, UCLA, Los Angeles, California, USA
| | - Tamara Pilishvili
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
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