There are three elements to this story now, first of course, the fact that vaccines are not safe actually goes viral across many platforms across the world.
You obviously didn't read the story. Its not that vaccines are bad but that certain companies had put out a vaccine that was contaminated and those who brought up information about the contaminated vaccine were shut down. This was a single vaccine from a single company that was contaminated. Vaccines themselves in general are extremely safe.
RE: WITH CHINESE CHARACTERISTICS Chinese bet on blockchain to counter vaccine scandal cover-up