On Jan. 14, 2019, Sanofi announced the FDA had approved the expanded use of Adacelﾮ (Tetanus Toxoid, Reduced Diphtheria Toxoid and Acellular Pertussis (Tdap) Vaccine Adsorbed) to include repeat vaccination to help protect against tetanus, diphtheria and pertussis.

It was the first and only Tdap vaccine in the U.S. approved for a repeat dose in people 10 through 64 years of age 8 years or more after the first vaccination. Adacel is also the only Tdap vaccine available in a syringe made without natural rubber latex, which may help reduce risk to patients with an allergy.