Fun fact: there has never been a double blind placebo controlled comparative study on any vaccine ever. Vaccines are pseudo science.
Discussion
Yes, I think this is correct.
For all childhood vaccines you can check the book "Turtles all the way down: vaccine science and myth".
Reading covid-19 vaccines I checked if there were placebo control group. I couldn't find one.
For all future vaccines, they will be updated to mRNA vaccines (very dangerous) and need no testing phase I think.
Weren’t there double blind placebo controlled trials for the Polio and HPV vaccines?
No
This study indicates it was:
