This study will evaluate the safety of administering an additional dose of an mRNA COVID-19 vaccine or mRNA bivalent COVID-19 booster vaccine to individuals who have had adverse reactions to a previous dose or administering an initial dose of an mRNA COVID-19 vaccine to individuals with a personal history of allergic reaction. In addition, this study will evaluate the safety of administering an initial or additional dose or bivalent booster of an mRNA COVID-19 vaccine to individuals experiencing an adverse reaction to a natural COVID-19 infection ("long COVID"). Eligible participants enrolled in this trial will receive an initial or additional dose of either the Pfizer-BioNTech COVID-19 bivalent vaccine or the Moderna COVID-19 bivalent vaccine. Participants will also be required to have 1-2 in person visits along with phone call follow up visits. We hypothesize that individuals who have had adverse reactions to a previous dose of an mRNA COVID-19 vaccine will tolerate an additional dose of the primary mRNA vaccine or bivalent booster, as indicated, and those with a personal history of allergic reaction will tolerate an initial dose of an mRNA COVID-19 vaccine. We also hypothesize that those individuals experiencing an adverse reaction will tolerate an initial or additional dose of a primary mRNA COVID-19 bivalent vaccine, as indicated. The study hypothesizes that individuals that have had adverse reactions to a dose of an mRNA COVID-19 vaccine will tolerate an additional dose and those with a personal history of allergic reaction will tolerate vaccination with an mRNA COVID-19 vaccine.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
137
Participants will receive an initial or additional dose of a highly protective COVID-19 mRNA vaccine for the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus in an environment where the investigators and staff are experienced in the care of patients with allergic reactions.
Participants will receive an initial or additional dose of a highly protective COVID-19 mRNA vaccine for the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus in an environment where the investigators and staff are experienced in the care of patients with allergic reactions.
University of Michigan
Ann Arbor, Michigan, United States
Participants Who Had a Reaction to an Initial or Additional Dose of the Pfizer-BioNTech or Moderna COVID-19 mRNA Vaccine, or Who Had Long COVID
Results reflect the number of participants who had previously received the Pfizer-BioNTech, the Moderna mRNA COVID-19 vaccine, or both, and who had experienced an adverse reaction (AR). An AR would be any symptom reported or objective finding during the 30-minute observation, or any symptom reported at the 7 day follow up. ARs were graded using the FDA Guidance for Industry Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials, which utilized the following grades: Grade 1 = Mild Grade 2 = Moderate Grade 3 = Severe Grade 4 = Life-threatening Grade 5 = Death
Time frame: up to approximately 7 days after the vaccine is given
Number of Participants With Treatment-related Allergic Reaction Adverse Events
The safety of administering an initial or additional dose will be determined by using the grading of systemic allergic reactions will be based on a scale of 1 (mild reaction) to 5 (severe reaction, including death) according to criteria set forth in the Consortium of Food Allergy Research (CoFAR) grading scale (version 3.0) modified for adults as well as the Brighton Collaboration to grade the diagnostic certainty of anaphylaxis. Results reflect the number of participants who received an initial dose or were revaccinated during the trial, and experienced related acute allergic reaction adverse event, and what the CoFAR severity for the events was. Events were deemed to be allergic if symptoms were consistent with an IgE-reaction and symptom onset began within 1 hour of vaccination.
Time frame: up to approximately 7 days after the vaccine is given
Number of Non-allergic Clinical Adverse Reactions
Results reflect the number of participants who experienced a non-allergic clinical adverse reaction (AR). A non-allergic clinical AR was determined by non-allergic symptomatology and time frame from when the participant received a vaccine. Nonallergic ARs were symptoms that were inconsistent with an IgE-mechanism or had an onset greater than 1 hour following vaccination. ARs were graded using the FDA Guidance for Industry Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials, which utilized the following grades: Grade 1 = Mild Grade 2 = Moderate Grade 3 = Severe Grade 4 = Life-threatening Grade 5 = Death
Time frame: up to approximately 7 days after the vaccine is given
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