Seizures are a known adverse event following receipt of a COVID-19 vaccine.[1]
On October 15, 2023, an analysis led by the Food and Drug Administration (FDA) was published as a pre-print on medRxiv, in which "a new signal was detected for seizures/convulsions" in children 2-4 years old following receipt of the Pfizer-BioNTech COVID-19 vaccine (BNT162b2) and 2-5 years old who received the Moderna COVID-19 vaccine (mRNA-1273).[2][3]
5.3.6 Cumulative Analysis of Post-authorization Adverse Event Reports (pp. 11, 21). (2021). Public Health and Medical Professionals for Transparency; Pfizer. https://web.archive.org/web/20230714210336/https://phmpt.org/wp-content/uploads/2021/11/5.3.6-postmarketing-experience.pdf ↩︎
Mandavilli, A. (2023, October 24). Covid Shots May Slightly Raise Stroke Risk in the Oldest Recipients. New York Times. http://archive.today/2023.10.24-193503/https://www.nytimes.com/2023/10/24/health/covid-flu-vaccine-stroke.html ↩︎
Lloyd, P. C., Hu, M., Shoaibi, A., Feng, Y., Wong, H. L., Smith, E. R., Amend, K. L., Kline, A., Beachler, D. C., Gruber, J. F., Mitra, M., Seeger, J. D., Harris, C., Secora, A., Obidi, J., Wang, J., Song, J., McMahill‐Walraven, C. N., Reich, C., & McEvoy, R. (2023). Safety of Monovalent BNT162b2 (Pfizer–BioNTech), mRNA–1273 (Moderna), and NVX–CoV2373 (Novavax) COVID–19 Vaccines in US Children Aged 6 months to 17 years. medRxiv. https://doi.org/10.1101/2023.10.13.23296903 ↩︎