CEO "comfortable" Pfizer COVID-19 vaccine protects against more severe Delta variant

Pfizer's CEO is expressing confidence about the efficacy of his company's COVID-19 vaccine against the Delta variant, which was first discovered in India and has America's top scientists sounding the alarm. 

"I feel quite comfortable that we cover it," Pfizer CEO and Chairman Albert Bourla told CBS News' Jan Crawford. "We will not need a special vaccine for it. The current vaccine should cover it." The United States is about to reach 600,000 recorded coronavirus deaths, even with conditions dramatically improving thanks to widespread vaccination.