Pfizer extends 5-day gain to record territory as US recommends COVID-19 booster shot

Debbie Bonnett (left) administers a COVID-19 vaccine at a pop-up vaccination clinic at Maple Leaf Bar in New Orleans on August 14, 2021.
Mario Tama/Getty ImagesA new recommendation by officials in the US for COVID-19 booster shots is helping shares of Pfizer hit record highs.The COVID-19 vaccine distributor extended its 5-day gain to 12% on Wednesday.Pfizer is now trading well above its record 1999 high, which served as massive resistance for the stock.Sign up here for our daily newsletter, 10