I have read that several people experienced elevated BPs. After my 1st shot, I was ill for 3 days; felt horrible. After my booster shot, felt horrible again for days. Three weeks later my BP shot up to 200/99, which lead to me having a stroke. Prior to the 2nd shot, my BP averaged around 112/low 70s. My BP continues to be high eveen after taking medication for it. I tell everyone to stay away from the shots. Too many side effects and and some potentially dangerous. Luckily, my stroke was a mild one; however, won't recommend the innoculation to anyone. I would have preferred getting shingles over a stroke.