More than 90 percent of Americans are still susceptible to Covid-19, said Dr. Ali Khan, dean of the College of Public Health at the University of Nebraska Medical Center.
"The fundamental biology of this disease hasn't changed," Khan said on Friday, reports the CNN.
"Over 90 percent of Americans are still susceptible. This is still a significant disease, and 30 percent of Americans are at high risk."
When asked about the uptick in new coronavirus cases in states like Florida and Texas, Khan said the US will continue to see increases if states don't open safely.
"We're in the midst of the greatest public health failure in American history, and if we're going to continue to open up and not open up safely, we're going to continue to see increased cases," Khan said.