Appropriate medical treatment must be available & adequately monitor patient in the event of an allergic reaction following vaccination. Not to be administered by intradermal or intravascular routes. Avoid in persons who have received a complete primary or booster vaccination in the previous 5 yr. Individuals receiving anticoagulant therapy or those w/ thrombocytopenia or any coagulation disorder (eg, haemophilia). Postpone vaccination in individuals suffering from acute severe febrile illness or acute infection except tetanus-prone wound; do not delay vaccination in the presence of minor infection &/or low-grade fever. Possible Guillain-Barré syndrome or plexus brachialis neuritis. May impair Ab formation during immunosuppressive treatment or in patients who suffer from weakened immune function; defer vaccination until therapy is completed or Ab titer is checked. Vaccination is recommended in individuals w/ chronic immunodeficiency disease (eg, HIV) if the course of the disease allows a reduced triggering of Ab response. Possible syncope following or before vaccination; place procedures to prevent falling injury & manage syncopal reactions. May not protect all vaccine recipients. Contains K 39 mg/dose & Na 23 mg/dose. Pregnancy & lactation. Childn <6 yr.