At least eight Covid-19 survivors have died due to mucormycosis, a fungal infection, during treatment in Maharashtra, a senior official said on Saturday, adding the total 200 such patients are being treated.

According to Dr Tatyarao Lahane, who heads the Directorate of Medical Education and Research (DMER), cases of mucormycosis are on the rise.

"Eight out of 200 such patients treated so far in various parts of the state have died due to mucormycosis, also known as a black fungus. They survived Covid-19 infection but the fungal infection attacked their weak immune system which proved fatal," Dr Lahane told PTI.

Niti Aayog Member (Health) V K Paul on Friday said mucormycosis is caused by a fungus named mucor, which is found on wet surfaces.

He had also said when the same Covid-19  patient is put on oxygen support, which has a humidifier containing water, the chances of him or her getting the fungal infection increase.

Dr Lahane said the fungal disease is already known but the cases are increasing because of Covid-19  related complications, wherein the use of steroids elevates the sugar level in blood while some medicines result in suppression of immunity of patients.

"In such a scenario, the black fungus infects the patient easily and spreads. If the fungus reaches the brain of the infected person, it can prove fatal. In one such case, one of the eyes of a patient had to be removed permanently to save his life," he said.

Dr Lahane said mucormycosis is a serious fungal infection that is found among people with a low level of immunity as well as among those suffering from chronic diabetes, or those who have gone through a kidney transplant among others.

"Though this fungus is present in the environment, people with suppressed immunity as well as who have received steroids during Covid-19  treatment are more susceptible to it.

Covid-19  patients with co-morbidities are also vulnerable and can catch the infection early," he explained.

Dr Lahane said the general symptoms of mucormycosis include headache, fever, pain under the eyes, nasal or sinus congestion, and partial loss of vision among others.

Speaking about treatment, he said, "A patient generally needs a particular type of injection to be given for 21 days. The basic cost of this injection comes around Rs 9,000 per day. Treatment expenditure escalates with other facilities, medicines etc".      PTI