“It’s not a vaccine then”
No vaccine is 100% effective, This vaccine at about 95% is extremely effective compared to most. I think the Salk vaccine which broke the back of Polio was only 70% effective
The 5% that still can “catch” Covid are reported to have little to no symptoms. That 5% with a lower immunity would still probably be contagious, that’s what they are investigating....
Salk didn’t break polio. Hygiene and access to better water etc did. It was trending down before the vaccine already and after it started trending up again.