Pfizer announced it started a clinical trial testing an omicron-specific formula of its Covid-19 vaccine. With the vaccinated and boosted already highly protected against hospitalization, the FDA would have to consider if the formula is even needed. » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Watch more NBC video: http://bit.ly/MoreNBCNews NBC News Digital is a collection of innovative and powerful news …

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Dr. Rick Bright will testify before a House committee on Thursday. He plans to tell lawmakers, “Our window of opportunity is closing. If we fail to develop a national coordinated response, based in science, I fear the pandemic will get far worse and be prolonged, causing unprecedented illness and fatalities.” » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Watch more NBC …