Postvaccination Symptoms After a Fourth Dose of mRNA SARS-CoV-2 Vaccination in Patients With Inflammatory Bowel Disease

Overall, 1933 participants with IBD completed at least 1 questionnaire regarding postvaccination symptoms after administration of each of the 4 mRNA SARS-CoV-2 vaccine doses. Symptoms after a fourth mRNA vaccine are less frequent and generally milder than after previous doses