Vaccine Safety Monitoring
CDC monitors the safety of vaccines by:
- Performing high-quality vaccine safety research.
- Making determinations about whether vaccines caused reactions in certain cases and helping to learn about preventable risk factors.
- Identifying vaccine adverse events through public health surveillance.
CDC’s Immunization Safety Office conducts four primary vaccine safety activities:
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Vaccine Adverse Event Reporting System (VAERS)
An early warning system that helps CDC and FDA monitor problems following vaccination. Anyone can report suspected vaccine reactions and issues to VAERS. -
Clinical Immunization Safety Assessment (CISA) Project
A partnership between CDC and several medical centers that conduct clinical research on vaccine-associated health risks in certain groups of people.
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Vaccine Safety Datalink (VSD)
A collaboration between CDC and several health care organizations that allows ongoing monitoring and proactive searches of vaccine-related data. -
Emergency Preparedness for Vaccine Safety
In the event of a disease outbreak in which a mass vaccination campaign is needed, CDC activates emergency preparedness activities to ensure that vaccines remain safe.
- Page last reviewed: August 28, 2015
- Page last updated: August 28, 2015
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