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Pneumocystis jirovecii 

Pneumocystis jirovecii
Pneumocystis jirovecii

Robert F. Miller

and Laurence Huang


July 30, 2015: This chapter has been re-evaluated and remains up-to-date. No changes have been necessary.


Early initiation of antiretroviral therapy associated with reduced mortality in HIV-infected patients presenting with opportunistic infections.

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date: 27 September 2021

The ascomycete fungus Pneumocystis jirovecii (previously called Pneumocystis carinii) is the cause of pneumocystis pneumonia (PCP) in humans, which occurs largely among people with impaired CD4+ T-lymphocyte function or numbers, e.g those infected with HIV, or organ transplant recipients taking therapeutic immunosuppressive agents. The organism is restricted to humans, and disease is now thought to arise from ...

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