How do these sources support vaccination being "murderous"? Saying it's only a bit worse than the flu is also a bit odd in this context, given the CDC recommend

How do these sources support vaccination being "murderous"? Saying it's only a bit worse than the flu is also a bit odd in this context, given the CDC recommends flu vaccinations for "everyone ages six months and older"? "reliable sources" should also support the argument being made.