After being released, the Oregon group traveled by bus to the city of Dengfeng, Dewing said.

CNN: U.S. students face second quarantine in China

"The forecast here from Dengfeng is a high chance of smog, " he said from their hotel.

CNN: U.S. students face second quarantine in China

The group was placed in quarantine on Sunday in Dengfeng, Henan province, after a student tested positive for the virus, Dewing said.

CNN: U.S. students face second quarantine in China