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Section 1. Active and Passive Immunization
Active Immunization
Reporting of Adverse Events
Before administering a dose of any vaccine, health care professionals should ask parents and patients if they have experienced adverse events following immunization with previous doses. Although extensive safety testing is required before vaccine licensure, these prelicensure studies may not be large enough to detect rare adverse events or determine the rate of adverse events previously linked with the vaccine. Unexpected events after administration of any vaccine, particularly events judged to be clinically significant, should be described in detail in the patients medical record and subsequently submitted to the VAERS (http://vaers.hhs.gov). There is no time limit for reporting an adverse event. The FDA and CDC encourage reporting of any significant adverse event following an immunization, even if it is uncertain that the event was caused by the vaccine.
The National Childhood Vaccine Injury Act of 1986 requires physicians and other health care professionals who administer vaccines covered under the National Vaccine Injury Compensation Program to maintain permanent immunization records and to report to the VAERS any condition listed on the reportable events table (see Appendix IV, p 842) or listed in the manufacturers package insert as a contraindication to additional doses of vaccine. The antigens to which these requirements apply, as of January 2009, are measles, mumps, rubella, varicella, poliovirus, hepatitis A, hepatitis B, pertussis, diphtheria, tetanus, rotavirus, Hib, pneumococcal conjugate, meningococcal (conjugate and polysaccharide), human papillomavirus, and influenza (inactivated and live intranasal) vaccines (see Record Keeping and Immunization Information Systems, p 38).
Vaccine Adverse Event Reporting System (VAERS)|
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VACCINE ADVERSE EVENT REPORTING SYSTEM (VAERS)
VAERS is a national passive surveillance system that
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