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Check out the companies making headlines before the bell:
Pfizer (PFE), BioNTech (BNTX) – The companies said studies showed that three doses of their Covid-19 vaccine neutralized the omicron variant, while two doses still offered protection. Pfizer and BioNTech also said they're continuing to work on an omicron-specific vaccine. Pfizer and BioNTech came well off earlier premarket lows on the news, with Pfizer up 1.4% and BioNTech trimming its loss to 1.5%.
Campbell Soup (CPB) – The food producer beat estimates by 8 cents with adjusted quarterly earnings of 89 cents per share, although revenue was slightly below analyst forecasts. Campbell said demand remains elevated for its products, and that it's been able to moderate the
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