In the midst of an oxygen crisis being faced by Covid-19 patients in the national capital, Dr KA Shah, COO, Aakash Healthcare of Delhi, informed that only 1-1.5 hours of oxygen left in his hospital. “233 Covid-19 patients are admitted here, of which 75% are surviving solely on oxygen. We’ve only 1-1.5 hours of oxygen left and are in dire need. Tankers coming from different states with Oxygen supply aren't being allowed to come from their states,” said Dr Shah.