B1A4's Sandeul was revealed to be suffering from a cold at the moment.  He was supposed to attend the recording of KBS 2TV's 'Yoo Hee Yeol's Sketchbook' on October 11, but because he is in poor condition, his group mate Jinyoung will participate in his stead. 

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Regarding Sandeul's current condition, the agency stated, "After getting treated at the hospital, he is resting at home.  Regarding his future schedules, we will take into consideration our artist's condition foremost."

Get lots of rest and feel better, Sandeul!