6 Months Later, Pfizer and BioNTech's Vaccine Data Continues to Impress

Pfizer (NYSE: PFE) and BioNTech (NASDAQ: BNTX) recently disclosed six-month efficacy for their COVID-19 vaccine. In this video from Motley Fool Live, recorded on April 5, Fool.com Contributors Brian Orelli and Keith Speights discuss why investors and patients shouldn't be worried about a slight drop in efficacy.