Ranchi: As many as four people have died of mucormycosis, a rare but fatal disease also commonly known as black fungus, in the state while 15 patients are undergoing treatment for the diseases at different hospitals. While a state-level meeting was conducted over the development on Saturday, the state government will discuss it on Sunday. Officials of the state health department told TOI that they did not keep a record of the patients infected by black fungus but said they are ready to hold a discussion with the Centre about the disease and its management on Sunday. Additional chief secretary (health) Arun Kumar Singh, however, stressed that the government is taking the rising cases of the disease seriously and is keeping a close watch on the development.