Vaccine Safety Datalink (VSD)

The Vaccine Safety Datalink (VSD) is a collaborative project between the CDC and healthcare organizations that monitors the safety of vaccines. It collects and analyzes health data from millions of individuals to detect potential side effects or adverse events from vaccines. By comparing vaccinated and unvaccinated people, VSD helps ensure vaccines are safe and effective, providing scientific evidence to guide public health recommendations. Its ongoing surveillance helps identify rare side effects quickly and maintain public confidence in vaccination programs.