A killed vaccine derived from the oncogenic Herpesvirus ateles.

A killed herpesvirus vaccine was prepared by inactivation of the oncogenic Herpesvirus ateles (HVA) with heat and formaldehyde. The vaccine proved safe in 9 marmosets (Saguinus oedipus) during a period of 461 days. The vaccinated marmosets developed high titers of serum antibodies against HVA and were resistant to 316 lethal dose 50 (LD50) cell-free HVA; the nonvaccinated control monkeys died of malignant lymphoma. The 5 challenged monkeys are clinically well and have now been under observation for 362 days.