Pfizer and BioNTech start trials of new Omicron-specific jab
The companies have adapted their original vaccine to target the fast-spreading variant.
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Pfizer and BioNTech start trials of new Omicron-specific jab
BBC News
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Pfizer and BioNTech announce trials of new Omicron jab
BBC News
Pfizer and BioNTech have adapted their original vaccine to target the fast-spreading variant.