NCIt definition : A genus of yeast-like fungi in the family Pneumocystidaceae. Members of the genus
are found in the lungs of terrestrial mammals from almost all geographic regions.
Communication between hosts likely happens by an airborne route to uninfected individuals.
Latent infections can develop into pneumonia in immunologically impaired individuals.;
Alternative definition : CDISC: Any fungal organism that is not assigned to the species level but can be assigned
to the Pneumocystis genus level.;