Abstract
SARS-CoV-2 virus and its variants continue to be on a rampage worldwide. Several vaccines are being marketed to control their spread and reduce severity of symptoms in the affected. Various adverse events are being reported following the vaccine administration and therefore this systematic review investigated the oral adverse events post-COVID-19 vaccination. A systematic search of five databases was conducted. Case reports, case series and observational studies describing oral lesions/oral adverse effects (outcome) following anti-SARS-CoV-2 vaccination (exposure) in humans were included. Quality assessment of the studies was done using Joanna Briggs Institute Critical Appraisal tools. A working classification was developed from reported final diagnosis. The systematic review included 18 individual cases. Majority of oral lesions occurred following BNT162b2 vaccination with average age of occurrence at 59.94 years. 67% of the affected individuals were female, with hypertension being the most common comorbidity. Immune-mediated oral events have a propensity of occurrence following COVID-19 vaccination. mRNA-based vaccinations may have an affinity for causing oral adverse effects. It might be due to the immune dysregulation caused by these vaccinations. The female, geriatric population and older individuals with co-morbidities might have an increased affinity to develop oral lesions post-COVID-19 vaccination.
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