No, I didn't Google it, since I learned about it in an actual class in an actual school.
You are incorrect because you've misinterpreted it.
You're saying
Shot 1.) 100% effect
Shot 2.) 80%
Shot 3.) 60% and so on, approaching 0%
That is not what the evidence shows.
Not sure why your links aren't posting.
Not sure what you are referring to shot 1 and 3, and I have not misrepresented anything. The Serial Flu shot problem, since you refuse to google it. Is where if you get a flu shot more than one year in a row, in becomes less effective. The CDC says over the last 12 years the flu shot has been on average 41% effective.
If you get a flu shot several years in a row, studies have showed effectiveness drop to 28% to below 0 and can even make you more likely to get the flu. It all depends on what strains are out that year. in 2011 they saw no effect, but all other years since 2009, repeat or serial flu shots lowered protection, each year was by a different amount. Even by individuals it can vary as it depends if that person has had the flu before and built some natural immunity and other factors. They are still studying it. Anybody interested, try this.
-If you type in Google "Michigan study serial flu shot problem" some studies come up.