Let's try it this way, since we're speaking different languages. Most people have the Polio vaccine, more even than the Covid vaccine. Yet thousands of people

Let's try it this way, since we're speaking different languages. Most people have the Polio vaccine, more even than the Covid vaccine. Yet thousands of people aren't regularly dying from polio in the US despite being vaccinated. Same goes for MMR, and the other vaccines we all got. So the polio vaccine is "Safe and effective". The MMR vaccine is "safe and effective". See the difference?