The Side Effects of Vaccines - How High is the Risk?
After initial immunization, a booster injection or booster dose is a re-exposure to the immunizing antigen. It is intended to increase immunity against that antigen back to protective levels, after memory against that antigen has declined through time.
Its is very important for us to use this injection otherwise our health is in danger.
The side effects of the vaccine typically start within 12 to 24 hours of vaccination, but it may be difficult to tell the two apart if you become infected between vaccine doses. If you experience side effects that last beyond 48 hours, you should contact your doctor or medical provider for advice. COVID-19 vaccines can cause a short fever, headache, fatigue, sore arm or chills, especially after the second dose. Other reactions are extremely rare.