Hypersensitivity. Syncope. Do not administer by intravascular inj, ID or SC; should not be administered into the buttocks. Postpone vaccination in cases of acute or febrile disease. Hematoma. Do not administer in individuals w/ progressive or unstable neurological disorders, uncontrolled epilepsy or progressive encephalopathy; GBS. Pregnancy & lactation. Childn <4 yr.