<prompt> Giemsa stain yeast cells in HIV are associated withAspergillosisBlastomycosisCryptococcosisHistoplasmosis  <response>: C Cryptococcosis Cryptococcus neoformans is an encapsulated yeast that causes cryptococcosis. Cryptococcosis has changed from a relatively obscure fungal pathogen that infects immunocompetent patients to a leading cause of central nervous system infection in the worlds enlarging immunocompromised populations. Infection with C. neoformans is termed cryptococcosis. Most infections with C. neoformans occur in the lungs. Fungal meningitis and encephalitis, especially as a secondary infection for AIDS patients, are often caused by C. neoformans, making it a particularly dangerous fungus. Infections with this fungus are rare in those with fully functioning immune systems. 