Dr. Timothy Block, President and CEO, and Lou Kassa, Executive Vice President and COO, of the Pennsylvania BioTech Center in Doylestown, share their work and their insight into the road toward a COVID-19 vaccine with Dr. Vail Garvin, President and CEO, of the Central Bucks Chamber of Commerce in "Chamber Chat - On the Street," filmed and directed by Thomas Brunt, TebWeb Innovations.