Regulatory Update: Encephalomyelitis Vaccine Requirements

Summary

The US FDA is amending the standard requirements for the Encephalomyelitis Vaccine, Eastern and Western, Killed Virus, to include specific requirements for Venezuelan equine encephalomyelitis vaccines and to revise the potency test for Eastern and Western equine encephalomyelitis vaccines, which now uses Vero 76 cells to evaluate potency and establish minimum antibody titers.