One database, the Vaccine Adverse Event Reporting System (VAERS), will receive reports of adverse reactions and any concern will be revealed to vaccine providers and the public. VAERS is a national early warning system to detect possible safety problems in U.S. licensed vaccines and is co-managed by U.S. Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC). VAERS accepts and analyzes reports of adverse events (possible side effects). The vaccine development companies, the FDA and CDC will partner together to avoid human harm from these vaccines.