Covid cases linked 'black fungus infection' appears across Delhi hospitals Published: Recipient's Name Send However, doctors said this alarming affliction called Mucormycosis is rare but not new. What is new is the impact of Covid behind triggering this deadly infection. New Delhi: The cases of rare black fungus infection linked with Covid-19 have started to appear across the hospitals in the national capital after being higlighted by Ganga Ram hospital a few days ago. Max Superspeciality hospital in Delhi has reported as many as 24 cases amid the Covid pandemic as against four cases reported last year. Sanjay Sachdeva, Principal Director of ENT, Max hospital, told IANS that all these patients had Covid-19 while 20 of them lost their eyesight.