ANATOMY

Detailed explanation-1: -PCP is also a common opportunistic infection among people living with HIV/AIDS in developing countries.

Detailed explanation-2: -Pneumocystis pneumonia or PCP is a fungal infection in one or both lungs. It is common in people who have a weak immune system, such as people who have AIDS. The disease is less common in the U.S. than it used to be. When it happens, you need medical attention right away.

Detailed explanation-3: -Pneumocystis jirovecii is the opportunistic fungal organism that causes Pneumocystis pneumonia (PCP) in humans. Similar to other opportunistic pathogens, Pneumocystis causes disease in individuals who are immunocompromised, particularly those infected with HIV.

Detailed explanation-4: -First, because the incubation period of P. jirovecii is quite broad (range, 7–188 days) [21], 5 days may not be an appropriate cut-off for differentiating between cases of hospital-acquired and community-acquired PCP.