Pfizer knew the vaccine was adulterated and did not disclose it. That’s fraud, and it should override Pfizer’s liability exemption. From Zachary Stieber at The Epoch Times via zerohedge.com:
Pfizer’s COVID-19 vaccine is adulterated due to the undisclosed presence of a DNA sequence, experts say.

That should prompt a recall by the U.S. Food and Drug Administration (FDA), according to Dr. Robert Malone, a vaccine expert whose work has been cited by Pfizer.
“It absolutely should be recalled,” Dr. Malone told The Epoch Times.
“Will the FDA do its job?” he added later.
Pfizer’s vaccine contains a Simian Virus 40 (SV40) DNA sequence, authorities in Canada confirmed to The Epoch Times. Authorities found the sequence after outside researchers, including Kevin McKernan, discovered the sequence in the shot.
The whole SV40 virus can cause cancer, prompting its removal from polio vaccines in the past. While the primary genetic sequence of the virus associated with cancer is not in Pfizer’s vaccine, there is a portion of the sequence called a promoter-enhancer, which “can get things into the nucleus, so that is a concern,” David Wiseman, a former Johnson & Johnson scientist, told The Epoch Times.
Due to the presence of the sequence, some experts say, the FDA should find the product adulterated, which is defined under federal law as having a “strength, quality, or purity differing from the official compendium.”
Congress directed the FDA that if tests are run on a drug suspected of being adulterated and the drug fails to meet the standards in the compendium, and there is a health hazard, to direct the manufacturer to issue a recall, Dr. Malone noted in an essay.