Pfizer/BioNTech (PFE.N), (22UAy.DE) COVID-19 vaccine provided significant protection on December 14, 2021 Get link Facebook Twitter Pinterest Email Other Apps JERUSALEM, Dec 11 (Reuters) - Israeli researchers said on Saturday they found that a three-shot course of the Pfizer/BioNTech (PFE.N), (22UAy.DE) COVID-19 vaccine provided significant protection against the new Omicron variant.