Why do you find the flu shot questionable based upon something you learned, incorrectly, high school? Read the CDC report on the flu vaccine[1].

Your "theory" on shingles is inaccurate. The chickenpox virus can go dormant and resurface as shingles. Read the Mayo Clinic's overview.[2]

Basically, you are entirely wrong and are spreading inaccurate information, stop it.

[1] https://www.cdc.gov/flu/prevent/vaccine-benefits.htm [2] https://www.mayoclinic.org/diseases-conditions/shingles/symp...