1. The vaccine is the same as the vaccine from 2010-1, because they thought the flu strains were going to be the same.
2. The vaccine contains 3 strains of influenza, one of which is H1N1 or swine flu.3. One vaccination is expected to provide immunologic protection for the entire flu season, so a booster is not necessary.4. Any patient aged 6 months old or more should consider receiving the vaccine, unless they previously had a life-threatening adverse reaction to a prior flu vaccine.5. Patients with a history of an egg allergy should have the diagnosis confirmed. The influenza vaccine may still be given, however the setting must be where the medical staff can provide medications needed for life-threatening reactions. The odds of a life-threatening allergic reaction to the very tiny amounts of egg protein in influenza vaccines is very low.
Just in case you are wondering if I practice what I preach, here I am getting my own medical advice.