Established in 1990, the Vaccine Adverse Event Reporting System (VAERS) is a national early warning system to detect possible safety problems in U.S.-licensed vaccines. VAERS is co-managed by the Centers for Disease Control and Prevention (CDC) and the U.S. Food and Drug Administration (FDA). VAERS accepts and analyzes reports of adverse events (possible side effects) after a person has received a vaccination. Anyone can report an adverse event to VAERS. Healthcare professionals are required to report certain adverse events and vaccine manufacturers are required to report all adverse events that come to their attention.

The primary objectives of VAERS are to:

• Detect new, unusual, or rare vaccine adverse events.
• Monitor increases in known adverse events.
• Identify potential patient risk factors for particular types of adverse events.
• Assess the safety of newly licensed vaccines.
• Determine and address possible reporting clusters (e.g., suspected localized [temporally or geographically] or product-/batch-/lot-specific adverse event reporting).
• Recognize persistent safe-use problems and administration errors.
• Provide a national safety monitoring system that extends to the entire general population for response to public health emergencies, such as a large-scale pandemic influenza vaccination program.

The Healthy Home Economist Healthline