Mucormycosis or black fungus is a fungal disease which affects people with compromised immunity. Lately, black fungus infection is grabbing headlines as it infects COVID-19 people and claims lives. NDTV speaks to Dr. Rommel Tickoo, Director, Internal Medicine, Max Healthcare to find answers to some of the frequently asked questions on black fungus infection and newly reported white fungus and yellow fungus as well. Dr Tickoo also explains how these fungal infections affect COVID-19 patients and the preventive measures.