HomeMy WebLinkAbout04.17.2024 Board Correspondence - FW_ Evidence Review of Adverse Effects (6)From:Clerk of the Board
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Subject:Board Correspondence - FW: Evidence Review of Adverse Effects (3)
Date:Wednesday, April 17, 2024 11:43:55 AM
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Subject: Evidence Review of Adverse Effects (3)
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Public Record
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diana dreiss
April 2024 | 1
Evidence Review of the Adverse
Effects of COVID-19 Vaccination
and Intramuscular Vaccine
Administration
Vaccines are a public health success story, as they have prevented or
lessened the effects of many infectious diseases. However, to address
the concerns of individuals asserting that they or their children were
injured by vaccines, the Health Resources and Services Administration
(HRSA) administers the Vaccine Injury Compensation Program (VICP),
which provides compensation to those who assert that they were injured
by routine vaccines. HRSA also administers the Countermeasures
Injury Compensation Program, which provides compensation related to
injuries from pandemic, epidemic, or security countermeasures, such as
COVID-19 vaccines. The National Academies of Sciences, Engineering,
and Medicine (the National Academies) have contributed to the scientific
basis for VICP’s compensation decisions for decades.
Therefore, HRSA asked the National Academies to convene an expert
committee to review the epidemiological, clinical, and biological
evidence about the relationship between COVID-19 vaccines
and specific adverse events, as well as the relationship between
intramuscular administration of routinely administered vaccines
and shoulder injuries. The committee’s report, Evidence Review of
the Adverse Effects of COVID-19 Vaccination and Intramuscular Vaccine
Administration, presents its conclusions.
Evidence Review of the Adverse Effects of COVID-19 Vaccination and
Intramuscular Vaccine Administration draws 85 conclusions about the
causal relationship between these vaccines and possible harms. The
committee found significant evidence for 20 conclusions to establish,
favor acceptance of, or favor rejection of a causal relationship
between vaccines and possible harms. The evidence was insufficient
to establish, favor acceptance of, or favor rejection of 65 potential
relationships. The committee did not address the benefits of vaccines,
which have been well established for both COVID-19 vaccines and all
vaccines covered by VICP.
Consensus Study report
Highlights
• thrombosis with thrombocytopenia syndrome;
• immune thrombocytopenic purpura;
• capillary leak syndrome;
• myocardial infarction;
• ischemic stroke;
• hemorrhagic stroke;
• deep vein thrombosis, pulmonary embolism, and
venous thromboembolism;
• myocarditis;
• pericarditis without myocarditis;
• sudden death; and
• female infertility.
The committee also reviewed evidence about vaccines
administered intramuscularly—including but not limited
to COVID-19 vaccines—and shoulder injuries to help
VICP better understand whether vaccination can cause
specific types of shoulder injuries or a more general
syndrome designated as Shoulder Injuries Related
to Vaccine Administration (SIRVA). The committee
identified nine shoulder injuries for review.
April 2024 | 2
SCOpE OF rEViEW
The National Academies appointed a committee of
experts in epidemiology, causal inference, cardiology,
rheumatology, gynecology, audiology, neurology,
infectious disease, pediatrics, internal medicine,
hematology, orthopedics, and immunology to perform
this study. The committee evaluated evidence about
COVID-19 vaccines used in the United States, the scope
of which includes four vaccines—BNT162b2 (Pfizer/
BioNTech), mRNA-1273 (Moderna), Ad26.COV2.S
(Janssen), and NVX-CoV2373 (Novavax). For the
COVID-19 vaccine analysis specifically, the committee
reviewed a list of possible harms requested for inclusion
by HRSA, including:
• Guillain-Barré syndrome;
• chronic inflammatory demyelinating polyneuropathy;
• Bell’s palsy;
• transverse myelitis;
• chronic headache;
• postural orthostatic tachycardia syndrome (added
after the committee’s first public meeting);
• sensorineural hearing loss;
• tinnitus;
April 2024 | 3April 2024 | 3
COViD-19 VACCiNE CONClUSiONS
Most of the evidence available was for BNT162b2 (Pfizer/
BioNTech), followed by mRNA-1273 (Moderna). Janssen
(Ad26.COV2.S) was approved later than the first two
vaccines, had less uptake, and eventually had its U.S.
Food and Drug Administration (FDA) authorization
revoked on June 1, 2023; therefore, only a small number
of studies were available for examination. NVX-CoV2373
(Novavax) was the last available vaccine in the United
States, and as of the literature search cutoff date of
October 17, 2023, there was not enough evidence to draw
conclusions about its potential adverse effects.
Because Ad26.COV2.S (Janssen) was administered to
fewer people and its authorization was revoked by FDA
in the United States, only a small number of studies were
available for review. To supplement the evidence base,
the committee reviewed and considered studies of the
COVID-19 vaccine manufactured by Oxford-AstraZeneca
(ChAdOx1-S). As Ad26.COV2.S (Janssen) and ChAdOx1-S
(Oxford-AstraZeneca) share the same vaccine platform—
adenovirus vector—their profile of potential adverse
events is likely similar so associations could be made.
It is partially due to studies on ChAdOx1-S (Oxford-
AstraZeneca) that some of this report’s conclusions about
Ad26.COV2.S (Janssen) could be drawn.
The conclusions with sufficient evidence to establish,
favor rejection of, or favor acceptance of a causal
relationship are as follows:
CATEGOriES OF CAUSATiON
The committee adopted categories of causation that have been used by other National Academies
reports on vaccine safety, including:
• Evidence establishes a causal relationship—The totality of the evidence suggests that vaccination can
cause this harm. Further research is unlikely to lead to a different conclusion.
• Evidence favors acceptance of a causal relationship—The totality of the evidence suggests that
vaccination might cause this harm, but meaningful uncertainty remains. Studies that better
minimize bias and confounding, and studies that estimate effects more precisely, could lead to a
different conclusion.
• Evidence is inadequate to accept or reject a causal relationship—The available evidence is too limited
(e.g., few studies in humans, biased, imprecise) or inconsistent to draw meaningful conclusions
in support of or against causality. Future research could lead to a different conclusion. This
conclusion also applies to situations in which no studies were identified.
• Evidence favors rejection of a causal relationship—The totality of the evidence suggests that vaccination
does not cause this harm, but meaningful uncertainty remains. The committee acknowledges that
individual causal effects are difficult to ascertain and the limitations of applying population average
effects to draw conclusions about the causes of specific events in individual people. Future research
demonstrating a clear mechanism of action, or research demonstrating increased risk among
vaccinated people compared with unvaccinated people, could lead to a different conclusion.
April 2024 | 4
CONClUSiONS rElATED TO Ad26.COV2.S (JANSSEN)
The committee concluded that sufficient evidence exists to favor acceptance of a causal relationship
between Ad26.COV2.S (Janssen) and
• Guillain-Barré syndrome and
• thrombosis with thrombocytopenia syndrome.
CONClUSiONS rElATED TO NVX-CoV2373 (NOVAVAX)
The committee did not have sufficient evidence to form any conclusions establishing, favoring
acceptance of, or favoring rejection of a causal relationship between any adverse events and NVX-
CoV2373 (Novavax).
CONClUSiONS rElATED TO BNT162b2 (pFiZEr/BioNTech) AND
mrNA-1273 (MODErNA)
The committee concluded that evidence establishes a causal relationship between both BNT162b2
(Pfizer/BioNTech) and mRNA-1273 (Moderna) and myocarditis.
The committee concluded that the evidence favors rejection of a causal relationship between both
BNT162b2 (Pfizer/BioNTech) and mRNA-1273 (Moderna) and:
• Guillain-Barré syndrome,
• Bell’s palsy,
• thrombosis with thrombocytopenia syndrome,
• myocardial infarction, and
• infertility.
The committee concluded that the evidence favors rejection of a causal relationship between
BNT162b2 (Pfizer/BioNTech) and ischemic stroke
SHOUlDEr iNJUrY CONClUSiONS
The committee reviewed the available evidence regarding
vaccines administered intramuscularly and specific
injuries to the shoulder. For this section of the report, the
term vaccination includes but is not limited to COVID-19
vaccines.
The conclusions with sufficient evidence to establish,
favor rejection of, or favor acceptance of a causal
relationship follow:
The committee concluded that the evidence establishes a
causal relationship between vaccination and:
• subacromial/subdeltoid bursitis caused by direct
injection into the bursa,
• acute rotator cuff or acute biceps tendinopathy caused
by direct injection into or adjacent to a tendon,
• bone injury caused by direct injection into or adjacent
to the bone, and
• axillary or radial nerve injury caused by direct
injection into or adjacent to the nerve.
FOr MOrE iNFOrMATiON
This Consensus Study Report Highlights was prepared by National
Academies staff based on the Consensus Study Report Evidence Review
of the Adverse Effects of COVID-19 Vaccination and Intramuscular Vaccine
Administration (2024).
The study was sponsored by the Centers for Disease Control and
Prevention and the Health Resources and Services Administration. Any
opinions, findings, conclusions, or recommendations expressed in this
publication do not necessarily reflect the views of any organization or
agency that provided support for the project. Copies of the Consensus
Study Report are available from the National Academies Press, (800)
624-6242 or https://www.nap.edu/catalog/27746.
COMMiTTEE TO rEViEW rElEVANT liTErATUrE rEGArDiNG ADVErSE EVENTS ASSOCiATED WiTH VACCiNES George J. Isham
(Chair), HealthPartners Institute; Anne R. Bass (Vice Chair), Weill Cornell Medicine; Alicia Christy, Uniformed Services
University and Howard University School of Medicine; Delisa Fairweather, Mayo Clinic (Jacksonville, FL); James S. Floyd,
University of Washington; Eric J. Hegedus, Tufts University School of Medicine; Chandy C. John, Indiana University School
of Medicine; John Edward Kuhn, Vanderbilt University Medical Center; Evan Mayo-Wilson, University of North Carolina
Gillings School of Global Public Health; Thomas Lee Ortel, Duke University School of Medicine; Nicholas S. Reed, Johns
Hopkins Bloomberg School of Public Health and Johns Hopkins University School of Medicine; Andy Stergachis, University
of Washington; Michel Toledano, Mayo Clinic (Rochester, MN); Robert B. Wallace, University of Iowa; and Ousseny Zerbo,
Kaiser Permanente Northern California
NATiONAl ACADEMY OF MEDiCiNE FEllOW Inmaculada Hernandez, University of California, San Diego
STUDY STAFF Kathleen Stratton, Study Director; Ogan K. Kumova, Program Officer (since February 2023); Dara Rosenberg,
Associate Program Officer; Nerissa Hart, Senior Program Assistant (until May 2023); Olivia Loibner, Senior Program Assistant
(since June 2023); and Rose Marie Martinez, Senior Director, Board on Population Health and Public Health Practice
Health and Medicine Division
Copyright 2024 by the National Academy of Sciences. All rights reserved.
The committee concluded that the evidence favors
rejection of a causal relationship between vaccination
and chronic rotator cuff disease.
DATA rEGArDiNG CHilDrEN
Potential vaccine-associated harms may differ in children
and adults, so the committee conducted an in-depth review
of the literature on adverse events to COVID-19 vaccines
specifically for individuals under 18. Because the vaccine
was available to be administered to young children much
later than to adults, there was not enough information in
the literature for conclusions to be made about potential
harms to children, especially children under 11.
There is also little data available on shoulder injuries and
vaccination among the pediatric population. Similarly,
this lack of data did not allow for conclusions specific to
children to be made.
To learn more about this report, visit our website at
www.nationalacademies.org/vaccines-evidence-review.