Amid growing coronavirus cases, another number increasing: recoveries

At least 15 coronavirus patients in the U.S. are said to have recovered.

Isolation does not mean a patient is particularly dangerous. The measure is put into place simply to prevent spread of the virus in the community.

"That's why these seemingly drastic measures are being taken," Safdar, the medical director of infection control and prevention at UW Health in Madison, Wisconsin, told NBC News. "If you're a positive COVID-19 case, you stay in isolation until testing shows that you are negative."