COVID-19 Vaccine Side Effects Compared Shingrix vs Moderna vs Pfizer vs Johnson & Johnson vs Influenza Local Pain, Redness, Swelling, Myalgia, Fatigue, Headache, Chills, Fever, GI Symptoms Jesse O’Shea MD, MSc @JesseOSheaMD #Vaccine #SideEffects #Pfizer #COVID19 #comparison #diagnosis #allergy