Pfizer and BioNTech launch trial of Omicron-targeted COVID-19 vaccine

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NEW YORK: Pfizer and BioNTech said on Tuesday (Jan 25) they started a clinical trial to test a new version of their vaccine specifically designed to target the COVID-19 Omicron variant, which has eluded some of the protection provided by the original two-dose vaccine regimen. The companies plan to test the