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Incidence of Severe COVID-19 Illness Following Vaccination and Booster With BNT162b2, mRNA-1273, and Ad26.COV2.S Vaccines.
Kelly, J Daniel; Leonard, Samuel; Hoggatt, Katherine J; Boscardin, W John; Lum, Emily N; Moss-Vazquez, Tristan A; Andino, Raul; Wong, Joseph K; Byers, Amy; Bravata, Dawn M; Tien, Phyllis C; Keyhani, Salomeh.
  • Kelly JD; San Francisco VA Medical Center, San Francisco, California.
  • Leonard S; Department of Epidemiology and Biostatistics, University of California, San Francisco.
  • Hoggatt KJ; Institute for Global Health Sciences, University of California, San Francisco.
  • Boscardin WJ; F. I. Proctor Foundation, University of California, San Francisco.
  • Lum EN; San Francisco VA Medical Center, San Francisco, California.
  • Moss-Vazquez TA; San Francisco VA Medical Center, San Francisco, California.
  • Andino R; Department of Medicine, University of California, San Francisco.
  • Wong JK; Department of Epidemiology and Biostatistics, University of California, San Francisco.
  • Byers A; San Francisco VA Medical Center, San Francisco, California.
  • Bravata DM; San Francisco VA Medical Center, San Francisco, California.
  • Tien PC; Department of Microbiology and Immunology, University of California, San Francisco.
  • Keyhani S; San Francisco VA Medical Center, San Francisco, California.
JAMA ; 328(14): 1427-1437, 2022 10 11.
Article in English | MEDLINE | ID: covidwho-2084928
ABSTRACT
Importance Evidence describing the incidence of severe COVID-19 illness following vaccination and booster with BNT162b2, mRNA-1273, and Ad26.COV2.S vaccines is needed, particularly for high-risk populations.

Objective:

To describe the incidence of severe COVID-19 illness among a cohort that received vaccination plus a booster vaccine dose. Design, Setting, and

Participants:

Retrospective cohort study of adults receiving care at Veterans Health Administration facilities across the US who received a vaccination series plus 1 booster against SARS-CoV-2, conducted from July 1, 2021, to May 30, 2022. Patients were eligible if they had received a primary care visit in the prior 2 years and had documented receipt of all US Food and Drug Administration-authorized doses of the initial mRNA vaccine or viral vector vaccination series after December 11, 2020, and a subsequent documented booster dose between July 1, 2021, and April 29, 2022. The analytic cohort consisted of 1 610 719 participants. Exposures Receipt of any combination of mRNA-1273 (Moderna), BNT162b2 (Pfizer-BioNTech), and Ad26.COV2.S (Janssen/Johnson & Johnson) primary vaccination series and a booster dose. Main Outcomes and

Measures:

Outcomes were breakthrough COVID-19 (symptomatic infection), hospitalization with COVID-19 pneumonia and/or death, and hospitalization with severe COVID-19 pneumonia and/or death. A subgroup analysis of nonoverlapping populations included those aged 65 years or older, those with high-risk comorbid conditions, and those with immunocompromising conditions.

Results:

Of 1 610 719 participants, 1 100 280 (68.4%) were aged 65 years or older and 132 243 (8.2%) were female; 1 133 785 (70.4%) had high-risk comorbid conditions, 155 995 (9.6%) had immunocompromising conditions, and 1 467 879 (91.1%) received the same type of mRNA vaccine (initial series and booster). Over 24 weeks, 125.0 (95% CI, 123.3-126.8) per 10 000 persons had breakthrough COVID-19, 8.9 (95% CI, 8.5-9.4) per 10 000 persons were hospitalized with COVID-19 pneumonia or died, and 3.4 (95% CI, 3.1-3.7) per 10 000 persons were hospitalized with severe pneumonia or died. For high-risk populations, incidence of hospitalization with COVID-19 pneumonia or death was as follows aged 65 years or older, 1.9 (95% CI, 1.4-2.6) per 10 000 persons; high-risk comorbid conditions, 6.7 (95% CI, 6.2-7.2) per 10 000 persons; and immunocompromising conditions, 39.6 (95% CI, 36.6-42.9) per 10 000 persons. Subgroup analyses of patients hospitalized with COVID-19 pneumonia or death by time after booster demonstrated similar incidence estimates among those aged 65 years or older and with high-risk comorbid conditions but not among those with immunocompromising conditions. Conclusions and Relevance In a US cohort of patients receiving care at Veterans Health Administration facilities during a period of Delta and Omicron variant predominance, there was a low incidence of hospitalization with COVID-19 pneumonia or death following vaccination and booster with any of BNT162b2, mRNA-1273, or Ad26.COV2.S vaccines.
Subject(s)

Full text: Available Collection: International databases Database: MEDLINE Main subject: Immunization, Secondary / COVID-19 / BNT162 Vaccine / 2019-nCoV Vaccine mRNA-1273 / Ad26COVS1 Type of study: Cohort study / Observational study / Prognostic study Topics: Vaccines / Variants Limits: Adult / Aged / Female / Humans / Male Country/Region as subject: North America Language: English Journal: JAMA Year: 2022 Document Type: Article

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Immunization, Secondary / COVID-19 / BNT162 Vaccine / 2019-nCoV Vaccine mRNA-1273 / Ad26COVS1 Type of study: Cohort study / Observational study / Prognostic study Topics: Vaccines / Variants Limits: Adult / Aged / Female / Humans / Male Country/Region as subject: North America Language: English Journal: JAMA Year: 2022 Document Type: Article