The 62% is if you are exposed to the flu virus and have the shot.
The percentage of people getting the flu who didn't get the shot is kind of irrelevant, because it's directly impacted by how many people get the shot (and not in the way you think).
Epidemiology has identified that the more people in a population who are vaccinated against something, the less likely the unvaccinated are of catching it (because there are fewer infected people to come in contact with).
So, your chances of getting the flu are based on two factors - 1- the virulence of the strain (if you are in direct contact with the virus, what are the chances of infection... and of course this varies with your personal hygiene habits, the number of viral particles you are exposed to, and the area of exposure) and 2 - your odds of being exposed to the flu.
I don't personally get the shot. But that's because I don't really need it. I don't touch children or go to places where there are sick people, and have a reasonably healthy immune system. Additionally the company I work for does produce one of the annual vaccines, and a large number of my co-workers get vaccinated, decreasing my potential exposure.
victor809 wrote: