In a shocking incident, a 55-year-old woman in Madhya Pradesh's Ujjain, who had complained of difficulty in breathing, died after staff at a private hospital failed to find keys for the intensive care unit.The woman was admitted to Ujjain district hospital on Thursday night after she complained of difficulty in breathing and high blood pressure. As her condition worsened, doctors decided to shift her to a hospital in Madhav Nagar - meant for COVID 19 cases- after taking samples for coronavirus test.