I attribute the younger age group being infected now to that age group just recently being allowed to get the vaccines. Prior to that the majority were the elderly.
Some people misinterpreted the initial news on breakthrough cases. Most vaccinated and unvaccinated are not very frequently in contact with covid. Over a 15 month time period less than 10% of Americans tested positive.
The breakthrough cases will continue to rise as the vaccinated have more opportunity to come into contact with the virus.
I agree. But presumably there is no real need to test vaccinated people unless they develop symptoms severe enough to warrant a test. So who really knows what the real contagion is like when so many may be catching and spreading it but not showing any severe symptoms.