got7-updates:

JYP Entertainment announced on their official homepage on the 1st, “JB, Jr., and Youngjae are currently recovering with treatment and rest, and according to the results of the diagnosis at the hospital, all of the three members don’t have any chance of infection by February 1 and it will not cause further difficulty for their promotions.”

“In the case of JB and Youngjae, they were able to recover quickly with minor symptoms and plan to resume their activities starting on ‘Inkigayo’ on the 2nd. But in the case of Jr., he is set to resume activities starting on the 4th.”

“We apologize for causing worry to fans with our inability to maintain good health… Please continue to show your interest and support for GOT7 who will return with a healthier image.”

SOURCE