[https://amp.cnn.com/cnn/2021/01/22/health/face-mask-n95-coronavirus-transmission/index.html](https://amp.cnn.com/cnn/2021/01/22/health/face-mask-n95-coronavirus-transmission/index.html)
"If for four weeks the country essentially wore these masks in those risky settings like that indoors, what kind of difference do you think it would make?" Gupta asked.
"This would stop the epidemic," Karan responded.