Clear, science-based answers to your vaccine questions.
Vaccines train your immune system to recognize and fight specific pathogens without causing the disease itself. They use weakened or inactivated forms of a pathogen, or just a piece of it, to trigger an immune response that creates protective antibodies and memory cells.
Every approved vaccine undergoes rigorous testing through multiple phases of clinical trials, followed by ongoing safety monitoring after approval. Serious adverse reactions are extremely rare and far outweighed by the protection vaccines provide.
Vaccination schedules are developed by immunology experts based on decades of research into when vaccines are most effective and when children are most vulnerable to specific diseases.
Addressing concerns about ingredients, side effects, multiple vaccinations, and other common questions with straightforward, evidence-based answers.