Varicella, an acute viral systemic infection that may cause lifelong latent infection with the potential for causing
clinical reactivation, may be prevented by immunization. The present study was an open label, randomized, controlled,
phase III, multicentre trial, conducted to evaluate and compare the safety, tolerability and immunogenicity of a freeze
dried live attenuated Oka strain Varicella Vaccine (VR 795 Oka strain) with Varilrix (Oka-RIT strain) in children. A total of
268 healthy Indian children aged 12 months to 12 y with baseline VZV IgG antibody ( 0.05). The test live attenuated vaccine was found to be highly immunogenic, safe and
comparable to Varilrix used in control arm.