TY - CHAP M1 - Book, Section TI - PNEUMOCYSTIS INFECTIONS A1 - Masur, Henry A1 - Morris, Alison A2 - Kasper, Dennis L. A2 - Fauci, Anthony S. PY - 2017 T2 - Harrison's Infectious Diseases, 3e AB - Pneumocystis is an opportunistic pathogen that is an important cause of pneumonia in immunocompromised hosts, particularly those with HIV infection (Chap. 97), and in individuals with organ transplants, those with hematologic malignancies, and those receiving immunosuppressive therapy. The organism was discovered in rodents in 1906 and was initially believed to be a protozoan. Because Pneumocystis cannot be cultured, our understanding of its biology has been limited, but molecular techniques have demonstrated that the organism is actually a fungus. Formerly known as Pneumocystis carinii, the species infecting humans has been renamed Pneumocystis jirovecii. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/19 UR - accessbiomedicalscience.mhmedical.com/content.aspx?aid=1141412931 ER -