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On January 27, 1999, the Food and Drug Administration initiated a voluntary recall of Tripedia™ diphtheria and tetanus toxoids and acellular pertussis vaccine (DTaP), lot number 0916490, manufactured by Pasteur Merieux Connaught USA.* Routine post-release stability testing completed in January 1999 indicated that the potency of the diphtheria toxoid component of this lot was below specification. The potency of the tetanus and pertussis components of this lot was acceptable.
The lot was distributed during February-June 1998. All lots of Tripedia™ met potency specifications before release. Previously tested lots of Tripedia™ met diphtheria potency specifications in routine stability testing after release; stability testing of additional lots is in progress.
Recall of Tripedia™ Vaccine. JAMA. 1999;281(11):982. doi:10.1001/jama.281.11.982-JWR0317-3-1
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