Pfizer, BioNTech start testing Omicron vaccine TBS Report 26 January, 2022, 06:40 pm Last modified: 26 January, 2022, 06:41 pm Video of ওমিক্রনের টিকার ট্রায়াল - Pfizer, BioNTech start testing Omicron vaccine Keep updated, follow The Business Standard's Google news channel Pfizer / BionTech / Omicron vaccine