Do not inj intravascularly. Do not mix w/ other vaccines in the same syringe. Always administer at different inj sites if to be given at the same time as another injectable vaccine. Caution in case of an anaphylactic event following administration. Postpone vaccination in patients w/ acute febrile illness until fever is resolved. Ab response in patients w/ endogenous or iatrogenic immunosuppression may be insufficient to prevent flu. Administer w/ caution to individuals w/ thrombocytopaenia or bleeding disorder. May not protect all vaccinees. Pregnancy & lactation. Paed patients <18 yr.