First killed virus vaccine with rele­vant North American & Eurasian EIV A2 strains approved in the United States. Efficacy against EIV, EHV-1, EHV-4 demonstrated by challenge. Safe for use in pregnant mares. As­ceptically inoculate horses IM with a 2 mL dose. Administer a second 2 mL dose IM in 3-4 weeks using a different injection site. Administer a third 2 mL dose in 3-4 weeks either IM or IN. Revaccinate annually and prior to anticipated exposure either IM or IN.