History of hypersensitivity to live attenuated varicella virus, kanamycin or erythromycin. Fever or malnutrition; CV, renal or hepatic disorder; cellular immunodeficiency; primary, acquired immunodeficiency including, immunosuppression associated w/ AIDS or clinical manifestation of HIV infection; acute myelocytic leukemia, T-cell leukemia or malignant lymphatic tumor. Highly immunosuppressed patients due to RT or intensified treatment for leukemia. History of spasm w/in 1 year prior to administration. Concomitant administration of live vaccines (oral polio, measles, rubella, mumps & BCG) w/in 1 mth. Pregnancy or willingness to conceive w/in 2 mth. Childn <12 mth.