That is the claim, yes. 

https://video.nostr.build/063d06d0b3bc7baafb2a09c00e23c0e91c45e55c9c254eb2c27c85665b34f667.mp4

Funny how the regulators don't want to address this, pharma tried to hide the fact, and doctors are either unaware or pretending they don't know. If its a shot from Pfizer or Moderna, I'd like to see evidence that the batches aren't ALL "contaminated" with this.