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Incidence of Bell's Palsy After Coronavirus Disease (Covid-19) Vaccination: A Systematic Review and Meta-Analysis; [Incidencia De La Paralisis De Bell Despues De La Vacunacion Contra La Covid-19: Una Revision Sistematica Y Un Metanalisis] Publisher



Soltanzadi A1 ; Mirmosayyeb O2 ; Momeni Moghaddam A1 ; Ghoshouni H2 ; Ghajarzadeh M3, 4
Authors

Source: Neurologia Published:2024


Abstract

Objective: To estimate the pooled incidence of Bell's palsy after COVID-19 vaccination. Methods: PubMed, Scopus, EMBASE, Web of Science, and Google Scholar were searched by 2 independent researchers. We also searched the grey literature including references of the references and conference abstracts. We extracted data regarding the total number of participants, first author, publication year, the country of origin, sex, type of vaccines, and the number of patients who developed Bell's palsy after COVID-19 vaccination. Results: The literature search revealed 370 articles, subsequently deleting duplicates 227 remained. After careful evaluation of the full texts, 20 articles remained for meta-analysis. The most commonly administered vaccines were Pfizer followed by Moderna. In total, 4.54e+07 individuals received vaccines against COVID-19, and 1739 cases developed Bell's palsy. In nine studies, controls (individuals without vaccination) were enrolled. The total number of controls was 1 809 069, of whom 203 developed Bell's palsy. The incidence of Bell's palsy after COVID-19 vaccines was ignorable. The odds of developing Bell's palsy after COVID-19 vaccines was 1.02 (95% CI: 0.79-1.32) (I2 = 74.8%, P < .001). Conclusion: The results of this systematic review and meta-analysis show that the incidence of peripheral facial palsy after COVID-19 vaccination is ignorable and vaccination does not increase the risk of developing Bell's palsy. Maybe, Bell's palsy is a presenting symptom of a more severe form of COVID-19, so clinicians must be aware of this. © 2023 Sociedad Espanola de Neurologia
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