Former President Pranab Mukherjee's health has worsened after a lung infection, the Army's Research and Referral Hospital said in a statement on Monday. Mukherjee has been in coma since a brain surgery earlier this month. “There is a decline in the medical condition of Pranab Mukherjee since yesterday. He is in septic shock due to his lung infection and is being managed by team of specialists. He continues to be in deep coma and on ventilator support,” the hospital said.