Oral manifestations after vaccinations: A systematic review of observational studies.

Objective: This study aimed to assess the prevalence and types of oral adverse events following immunization (AEFIs) in people who received at least one dose of any type of vaccine.

Materials And Methods: We conducted a bibliographic search about oral AEFIs in MEDLINE, Embase, PubMed, and Ovid from database inception to November 07, 2022. Risk of bias was assessed using the MURAD or the Quality In Prognosis Studies tools.

Oral erythema multiforme after Pfizer-BioNTech COVID-19 vaccination: a report of four cases.

Background: The 2019 Coronavirus disease (Covid-19) has affected thousands of people worldwide. To date, vaccines appear to be the only method to prevent and reduce mortality. Four vaccinations have been outwardly approved by European Medicine Agency (EMA) in Europe: BNT162b2 (Comirnaty-BioNTech/Pfizer), mRNA-1273 (Spikevax-Moderna), ChAdOx1 (VaxzevriaAstrazeneca), and Ad26.