This seems unlikely. Vaccination is far less effective if you leave a large proportion of the population unprotected. That’s why we vaccinate everyone against rubella even though it’s only dangerous to foetuses if their mother catches it while pregnant.
I don’t know if it was due to production shortages or a cautious roll out, or a bit of both. But I doubt it was due to the medical profession forgetting how vaccination works.
This seems unlikely. Vaccination is far less effective if you leave a large proportion of the population unprotected. That’s why we vaccinate everyone against rubella even though it’s only dangerous to foetuses if their mother catches it while pregnant.
I don’t know if it was due to production shortages or a cautious roll out, or a bit of both. But I doubt it was due to the medical profession forgetting how vaccination works.