The U.S. reported over 1,500 coronavirus deaths in a single day for the first time since mid-May, making it the summer's deadliest day for the virus. CBS News' Danya Bacchus reports on the impact on back-to-school plans, and Columbia University virologist Dr. Angela Rasmussen joins CBSN to discuss how flu season may make things worse and factors to consider when making decisions on in-person learning.