The rapid spread of the COVID-19 virus has prompted medical researchers worldwide to go on the offense and look for vaccines and treatments. Bill Whitaker reports on some of the leading efforts.
JetBlue Airways Airbus A320-200 aircraft as seen on final approach landing at New York John F. Kennedy International Airport in USA. Nicola Economou | NurPhoto | Getty Images JetBlue Airways told employees Sunday that it plans to cancel hundreds of flights and operate less than half of its normal schedule this […]