Vaccine adjuvant

A vaccine adjuvant is a substance added to a vaccine to enhance the body's immune response to the antigen (the part that stimulates immunity). It helps the immune system recognize the vaccine more effectively, allowing for better protection, often with smaller doses or fewer shots. Adjuvants work by activating immune cells or prolonging the presence of the antigen, making the immune response stronger and more durable. They are safe and carefully tested to improve vaccine effectiveness without causing additional harm.