Rare dizziness, syncope, loss of consciousness, seizure, and risk of falling after vaccination

Abstract

<abstract> <p>Some individuals experience dizziness, syncope (temporary loss of consciousness caused by a fall in blood pressure), seizure, and similar rare adverse events after vaccination. Sudden impacts to alertness, consciousness, ability to talk, vision, or balance may pose rare risks for some vaccinees for a few days post vaccination. Herein, the Vaccine Adverse Event Reporting System (VAERS) database is examined for relevant adverse events. These adverse events exhibit a consistent pattern of onset soon after vaccination consistent with other reported reactogenicity adverse events. The onset of these adverse events soon after vaccination provides supportive evidence to reject the hypothesis that the majority of these adverse events represent background occurrences unrelated to vaccination. The immediate onset timing of these adverse events represent a pattern that warrants further study. The observed onset pattern for multiple unrelated vaccines are consistent with the possible etiology of innate immune responses to vaccination as causative for these observed adverse events. Cautionary avoidance of some activities immediately following vaccination may reduce accidental injuries.</p> </abstract>