Final answer:
Cryptococcosis is a disease caused by the encapsulated yeast fungus Cryptococcus neoformans, which can infect various parts of the body and potentially result in death if untreated.
Step-by-step explanation:
The disease of cryptococcosis is caused by the encapsulated yeast fungus Cryptococcus neoformans. This fungus can infect the lungs, skin, brain (CNS), bones, and urinary tract, and if left untreated, it can be fatal. The initial symptoms of cryptococcosis include fever, fatigue, and a dry cough, and in immunocompromised individuals, it can lead to meningitis.