Dr Raghuraj Hegde, a Bangalore-based eye surgeon who has treated a number of mucormycosis patients, told the BBC that there had been “massive undercounting of both cases and deaths” from the disease.
“Typically, deaths in mucormycosis occurs weeks to months after getting the diseases. Our present systems are not good to capture that data,” he said.
Cases were being also undercounted because diagnosis was difficult in smaller hospitals and in rural areas and only a fraction of the cases reached hospitals in big cities, he added.
Doctors said that many patients had died from the disease even before reaching a hospital and a number of treated and recovered patients appeared to be suffering from a relapse.
“We are seeing patients who were treated aggressively for the disease and discharged from hospitals returning with a recurrent infection which is manifesting in wider spread of the disease in the eye or brain,” Dr Akshay Nair, a Mumbai-based eye surgeon, told the BBC.