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The older species name Pneumocystis carinii (which now applies only to the Pneumocystis species that is found in rats [28]) is still in common usage. As a result, Pneumocystis pneumonia (PCP) is also known as Pneumocystis jiroveci[i] pneumonia and (incorrectly) as Pneumocystis carinii pneumonia. [29] [30] [31]
Pneumocystis jirovecii (previously P. carinii) is a yeast-like fungus of the genus Pneumocystis. The causative organism of Pneumocystis pneumonia , it is an important human pathogen , particularly among immunocompromised hosts .
Pneumocystosis is a fungal infection that most often presents as Pneumocystis pneumonia in people with HIV/AIDS or poor immunity. [1] [7] It usually causes cough, difficulty breathing and fever, and can lead to respiratory failure. [4]
In the same years, Pneumocystis carinii was often held responsible for severe lung infections in patients affected by AIDS. In 1999, the human variant of Pneumocystis carinii was renamed Pneumocystis jirovecii, but the former name is still commonly used.
The name Pneumocystis jiroveci, which is now corrected to Pneumocystis jirovecii, was proposed as a new name only for the human form previously identified as Pneumocystis carinii. Not all of Pneumocystis carinii is named Pneumocystis jirovecii. The name Pneumocystis carinii still applies to a rat parasite. Other taxa formerly classified as ...
Pneumocystis carinii. P.Delanoë & Delanoë (1912) Species ... which in turn contains the genus Pneumocystis, causative agent of Pneumocystis pneumonia. ...
[22] [48] It is most often caused by Histoplasma capsulatum, Blastomyces, Cryptococcus neoformans, Pneumocystis jiroveci (pneumocystis pneumonia, or PCP), and Coccidioides immitis. Histoplasmosis is most common in the Mississippi River basin, and coccidioidomycosis is most common in the Southwestern United States. [22]
Pneumocystis pneumonia (PCP) (originally known as Pneumocystis carinii pneumonia) is relatively rare in healthy, immunocompetent people, but common among HIV-infected individuals. [15] It is caused by Pneumocystis jirovecii.