The neurological risk profile of the AstraZeneca vaccine included headaches, tremors, muscle spasms, insomnia, and tinnitus, while the risk profile of the Moderna vaccine included sleepiness, vertigo, diplopia (double vision), paresthesia (a feeling of numbness or itching on the skin), taste and smell alterations, and dysphonia (hoarseness or loss of normal voice).
As to Pfizer vaccines, researchers found “an increased risk” of cognitive fog or difficulty in concentration.
And that’s just the neurological side effects!