'The second wave has begun': U.S. doctor says medical system may be stressed if people aren't careful

People must be vigilant as the U.S. braces for a second virus wave — or the health-care system could be under stress again, says William Schaffner of the Vanderbilt University School of Medicine.

'The second wave has begun': U.S. doctor says medical system may be stressed if people aren't careful
People must be vigilant as the U.S. braces for a second virus wave — or the health-care system could be under stress again, says William Schaffner of the Vanderbilt University School of Medicine.