VAERS encourages the reporting of any significant adverse event occurring after the administration of any vaccine licensed in the United States. You should report any significant adverse event even if you are unsure whether a vaccine caused the event. The National Childhood Vaccine Injury Act (NCVIA) requires health care providers to report: - Any event listed by the vaccine manufacturer as a contraindication to subsequent doses of the vaccine.
- Any event listed in the Reportable Events Table that occurs within the specified time period after vaccination.
The Reportable Events Table specifically outlines the reportable post-vaccination events and the time frames in which they must occur in order to qualify as being reportable. To obtain a copy of the Reportable Events Table, call 1-800-822-7967 or go to http://www.vaers.hhs.gov/reportable.htm. | 
