There's some improvement needed in lungs: Balasubrahmanyam's son on his health

SP Balasubrahmanyam's son SP Charan took to Instagram on Saturday to share an update on his father's health who's undergoing coronavirus treatment at a hospital. "There's still some improvement needed in...lungs, breathing and strength," Charan said. "The doctors are helping him sit up for a while, around 15-20 minutes almost every other day...It's a task, but he's making...effort," he added.