Cases of the deadly Black Fungus are on the rise in Bihar with the state government confirming there have been more than 400 infections. So far, 39 people have died due to the disease. Most of the patients are being treated at two hospitals - All India Institute of Medical Sciences (AIIMS), Patna and Indira Gandhi Institute of Medical Sciences (IGIMS) - as two other Covid hospitals lack tools for surgery to treat mucormycosis, commonly known as Black Fungus.