evidence: A Pfizer representative clarified he had been referring to research suggesting while "two doses of [Pfizer-BioNTech's Covid vaccine] may not be sufficient to protect against infection with the Omicron variant", vaccinated people were thought to still be protected against severe disease. [...] Claims Pfizer had "admitted... current vaccines 'do not work'" or "offer 'zero' protection against Covid-19", linking to Mr Paul's YouTube clip, then spread across numerous online platforms.