Pneumocystis pneumonia is a severe opportunistic infection in immunocompromised patients caused by the unusual fungus Pneumocystis jirovecii. Transmission is airborne, with both immunocompromised and immunocompetent individuals acting as a reservoir for the fungus. Numerous reports of outbreaks in renal transplant units demonstrate the need for valid genotyping methods to detect transmission of...

Pneumocystis jirovecii causes pneumonia in immunosuppressed individuals. However, it has been reported the detection of low levels of Pneumocystis DNA in patients without signs and symptoms of pneumonia, which likely represents colonization. Several studies performed in animals models and in humans have demonstrated that Pneumocystis induces a local and a systemic response in the host. Since P ...

In a previous cross-sectional study, we showed that clinical staff working in a hospital had significantly higher antibody levels than nonclinical staff to Pneumocystis jirovecii. We conducted a longitudinal study, described here, to determine whether occupation and self-reported exposure to a patient with P. jirovecii pneumonia were associated with antibody levels to P. jirovecii over time. Ba...

conclusions the results of the current study showed a high rate of co-infection of m. tuberculosis and p. jirovecii in the iranian patients with hiv. as the immune system condition worsened, the probability of occurrence of pneumocystis pneumonia (pcp) increased. therefore, more specific, most rapid and sensitive tests should be utilized for diagnosis of pcp in this group of patients. results a...

Pneumocystis pneumonia (PCP) remains a major cause of illness and death in HIV-infected persons. Sulfa drugs, trimethoprim-sulfamethoxazole (TMP-SMX) and dapsone are mainstays of PCP treatment and prophylaxis. While prophylaxis has reduced the incidence of PCP, its use has raised concerns about development of resistant organisms. The inability to culture human Pneumocystis, Pneumocystis jirovec...

chronic obstructive pulmonary disease (copd) is associated with a chronic inflammatory response in airways and lung parenchyma that results in significant morbidity and mortality worldwide. cigarette smoking considered as an important risk factor plays a role in pathogenesis of disease. pneumocystis jirovecii is an atypical opportunistic fungus that causes pneumonia in immunosuppressed host, al...

In recent years, clusters of Pneumocystis jirovecii (formerly Pneumocystis carinii) pneumonia (PCP) among immunocompromised individuals have been reported. Mostly, the source of infections was suspected to be within the clinical settings when transplant recipients and PCP patients shared hospital facilities. We report on a cluster of 16 renal transplant recipients positive for P. jirovecii. Non...

We report a case of Pneumocystis jirovecii transmission from colonized grandparents to their infant granddaughter. Genotyping of P. jirovecii showed the same genotypes in samples from the infant and her grandparents. These findings support P. jirovecii transmission from immunocompetent carrier adults to a susceptible child.

BACKGROUND Eighteen renal transplant recipients (RTRs) developed Pneumocystis jirovecii infections at the renal transplantation unit of Brest University Hospital (Brest, Brittany, France) from May 2008 through April 2010, whereas no cases of P. jirovecii infection had been diagnosed in this unit since 2002. This outbreak was investigated by identifying P. jirovecii types and analyzing patient e...

BACKGROUND The immune responses to Pneumocystis jirovecii major surface glycoprotein (Msg) in individuals with human immunodeficiency virus (HIV) infection are poorly understood. METHODS We examined the sequential serologic responses to recombinant Msg carboxyl terminus fragments (MsgC1, MsgC3, MsgC8, and MsgC9) by enzyme-linked immunosorbent assay in a cohort of individuals with HIV infectio...