Vaccine Development and Approval Process

Vaccine development involves several stages: researchers first create a vaccine in labs, then perform preclinical tests in animals. If safe, they conduct several phases of human clinical trials to assess safety, dosage, and effectiveness. Regulatory agencies review trial data to ensure the vaccine's safety and efficacy before granting approval or emergency use authorizations. After approval, vaccines are mass-produced and monitored for long-term safety. This rigorous process ensures that vaccines are both safe and effective for public use while balancing the need for timely access during health emergencies.