Do not inj IV. Temp ≥40°C w/in 48 hr not due to another identifiable cause, collapse or shock-like state (hypotonic-hyporesponsive episode) w/in 48 hr, persistent crying lasting ≥3 hr occurring w/in 48 hr, convulsions w/ or w/o fever occurring w/in 3 days. History of febrile convulsions, family history of convulsions, sudden infant death syndrome. Immunosuppressed patients. Thrombocytopenia. Monitor patient for at least 30 min after administration. Postpone vaccination in patients w/ acute severe febrile illness.