"I'm 49 years old and I could count all the flu's I've ever had on hand....}
Do you live in a bubble, or are you simply unable to count?
The Aztecs and the Incas as well as few others could have made even greater claims about their immune systems for thousands of years before their families met the Cortez's and the Pizarro's et al.
It is indisputable that viruses and Influenza have caused the deaths of untold millions. Even Louis Pasteur did not know what he was doing when he stumbled upon the vaccine process. Trust me, it works.
Your post reads as if a child wrote it.