Then last Season, I got the quadrivalent flu shot at a travel clinic, because it was a 'special' non-free flu shot that has more protections than the normal one you get here in Canada. (I was getting other travel vaccinations and they offered the quadrivalent flu shot. What's $30 when I was already spending ~$900?)
Shortly thereafter, a number of family members got extremely and violently sick with the flu, for 2-3 weeks continuously. I was 100% fine and never got sick.
Yes, I believe in the flu shot!