The label said, "We are worried about the effect it could have on the fans and it is contagious, so he needs to be quarantined and treated. It is difficult for him to carry out today's schedules."
Aron had been diagnosed with pink eye previously, and will also be missing the fansigning. He will be greeting his fans as scheduled on stage, but only Ren and Baekho will be holding the fansigning event.
Get well soon, JR.