Flu vaccine options 2013-2014 flu season. by vincent iannelli, m.d. updated october 16, 2013. written or reviewed by a board-certified physician. see about How to get your flu vaccine. flu vaccines will be available to all unc hospitals' personnel beginning on monday, sept. 9. both inactivated (shots) and live attenuated Flu Vaccine Coding For 2013 2014.