Hypersensitivity to any component of the vaccine, to neomycin, or after previous administration of varicella vaccine. Subjects w/ primary or acquired immunodeficiency states w/ total lymphocyte count <1,200/mm
3; presenting other evidence of lack of cellular immune competence; receiving immunosuppressive therapy including high-dose corticosteroids. Pregnant women. Avoid pregnancy for 1 mth after vaccination.