Inactivated Western Equine Encephalomyelitis Vaccine Propagated in Chick Embryo Cell Culture

79 individuals including 15 volunteers, 21 'at-risk' laboratory workers virgin to WEE virus, and 43 persons with prior WEE experience.

Formalin-inactivated Western equine encephalomyelitis (WEE) vaccine prepared in chick embryo cell cultures, administered as two 0.5-ml doses 28 days apart, a 0.5-ml dose followed by a 0.25-ml dose on day 28, or a 0.1-ml intradermal booster dose.

Serum neutralizing indices (LNI's) and safety (clinical reactions and laboratory values)surrogate