Side effects - or lack of side effects - after being vaccinated for COVID-19

The Covid-19 vaccine may cause side effects and reactions in some, but not for everyone. If you do have any symptoms, this will usually occur after the second dose. Each individual will respond differently, and no evidence that having a reaction versus not having symptoms will affect its efficacy. When you get the vaccine, your body essentially works to process it. All reactions are considered normal at this point, but you should contact your doctor if you have any concerns.