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MW U.S. drug regulators unmoved by Pfizer plan to seek Covid booster authorization

In an unusual exchange, the Food and Drug Administration and the Center for Disease Control on Thursday said there isn't scientific evidence that COVID-19 booster shots are required, hours after drug maker Pfizer $(PFE)$ said it would seek authorization for a Covid booster shot to help contain the Delta variant.

The outlook: The race between vaccines and the virus is still on. Meanwhile, as Daly noted, large parts of the world remain unvaccinated, a major headwind on global growth.