Hypersensitivity to egg, chicken, any other chicken component, & drug component. Anaphylaxis. Febrile patient or w/ malnutrition. Patients w/ CV & kidney disorders, or liver disease in acute phase, stadium increment, or active phase; acute resp disease or other active infectious disease; latent & convalescence period of flu. Patient who had fever w/in 2 days or allergy symptom eg, generalized rash after the inj at previous vaccination. Patient who showed Guillain-Barre syndrome or w/ neurological disorders w/in 6 wk from previous flu vaccination. Patient in inappropriate condition to be vaccinated.