Standardized vaccine safety definition should be used in future trials, CDC's Chen urges.
Executive Summary
VACCINE STANDARDIZED SAFETY DEFINITION SAFETY NEEDED FOR FUTURE TRIALS, CDC Vaccine Safety & Development Activity Chief Robert Chen, MD, said at a National Institute of Allergy & Infectious Diseases conference on pertussis vaccines June 5. Noting that the safety trials for acellular pertussis vaccines differed in design, schedule and methods, Chen called the results useful for comparing "relative, but not absolute, magnitude."