Do not inj intravascularly. Hypersensitivity to eggs (low risk for anaphylactic reactions in childn). Adequate treatment provisions including epinephrine inj should be available for immediate use if anaphylactic reaction occur. Obtain vaccination history & determine previous reactions to any vaccine prior to administration. History of convulsions, cerebral injury or any other condition in which stress due to fever should be avoided. HIV w/ or w/o evidence of immunosuppression. May not protect all vaccine recipients. Avoid close association w/ high-risk individuals (immunocompromised, pregnant w/o documented +ve history of varicella or lab evidence of prior infection & their newborns) susceptible to varicella for up to 6 wk following vaccination. Individuals w/ thrombocytopenia. Post-exposure prophylaxis. May result in temporary depression of tuberculin skin sensitivity; administer tuberculin test any time before, simultaneously w/ or at least 4-6 wk after ProQuad. Childn w/ untreated TB. Concomitant vaccination w/ diphtheria, tetanus & acellular pertussis. Not to be given concomitantly w/ Ig or varicella-zoster Ig. Avoid pregnancy 3 mth following vaccination. Lactation. Not recommended for infant <12 mth. Adolescents & adults. Not indicated for elderly >65 yr.