COVID-19 Age-Stratified Infection Fatality Rate (IFR)
Age-stratified infection fatality rate of COVID-19 in the non-elderly informed from pre-vaccination national seroprevalence studies
0.0003% at 0-19 years,
0.003% at 20-29 years,
0.011% at 30-39 years,
0.035% at 40-49 years,
0.129% at 50-59 years,
0.501% at 60-69 years.
IFR of influenza is 0.1-0.2%.
Reference: https://www.medrxiv.org/content/10.1101/2022.10.11.22280963v1
In regard to the statistics in epidemiology, there is no terminology or definition for "infection survival rate". The terms for statistics in epidemiology are incidence, prevalence, morbidity, and mortality.
https://www.health.ny.gov/diseases/chronic/basicstat.htm
https://www.bmj.com/about-bmj/resources-readers/publications/epidemiology-uninitiated/2-quantifying-disease-populations
What the CDC did was reporting the rate of myocarditis in children and young adults (who had COVID-19) in vaccinated and unvaccinated population which is a false logic. What they should have done is studying the incidence of COVID-19 in children and young adults, and from this statistics how many cases of myocarditis they found which will be the real rate of myocarditis from COVID-19. They need to compare the real rate of myocarditis from COVID-19 based on case incidence per million of population with the rate of post-vaccination myocarditis (per million of vaccinated subjects) from mRNA COVID-19 vaccines.