 [ Symptoms ] i am just coming off having the severe flu and have not had the flu shot this year is it wise to still get it [ Disease ] how do you know you had the flu unless you had a nasal swab to confirm the diagnosis of type a or type b influenza the flu then maybe you had another flu like illness there are many of them people who self diagnose themselves with the flu are often incorrect besides if you did have the flu you only had one strain the flu vaccine offers protection against three strains that may be circulating so i would vote for you getting the flu vaccine this year