Post-COVID-19 vaccine acute encephalitis in an adult patient: A case report and literature review.

Several vaccines were approved after COVID-19 pandemic, which have been fast-tracked for emergency use. The short- and long-term safety profile has been an area of concern. We presented a patient with encephalitis followed by hyponatremia who developed hallucination and seizure 1 day after receiving the second dose of Sinopharm vaccine.