👉 Cryptococcus is a genus of bacteria that belongs to the phylum Proteobacteria. Cryptococcus is an opportunistic pathogen that can cause infections in various tissues, including the skin, eyes, and respiratory tract. It is also known for its ability to form a commensal colony on human skin, which can lead to infection. Cryptococcus has been associated with several serious health issues, including meningitis, septic shock, and pneumonia.