Again, you seem to be focused on hypotheticals without any factual evidence to show for it.

Also, you didn't answer my question: how does this hypothetical mother know that it is the vaccine that harmed her child?

Both of my parents (in their 70s) have received the first dose of the vaccine and are fine.

Again, you seem to be focused on hypotheticals without any factual evidence to show for it.

Also, you didn't answer my question: how does this hypothetical mother know that it is the vaccine that harmed her child? Who are these hypothetical people that you speak of?

Both of my parents (in their 70s) have received the first dose of the vaccine and are fine.