Can you safely get another COVID shot after a bad reaction? new study says maybe
NCT ID NCT05212610
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at whether it is safe to give another dose of a COVID-19 mRNA vaccine to people who had a bad reaction to a previous dose, or to people with a history of allergies. It also included people with long COVID. A total of 137 adults took part and received either the Pfizer or Moderna bivalent booster. The goal was to see how many had another allergic or non-allergic reaction after the shot.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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University of Michigan
Ann Arbor, Michigan, 48109, United States
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