The Vaccine Information Statement for inactivated influenza vaccine states that you should not get the vaccine if you are severely allergic to antibiotics. Which antibiotics are they referring to?

The antibiotics, of which there are trace amounts in some influenza vaccines, are neomycin, gentamicin, and polymyxin B. You should check each product’s package insert information to see which, if any, antibiotics are listed.  Links to all current vaccine package inserts for vaccines are available at www.immunize.org/fda/.