Abstract:
BACKGROUND:Pneumocystis pneumonia (PCP) may develop as a clinical manifestation of nosocomial pneumonia by means of either reactivation of resident P. jirovecii or de novo infection. However, there have been no studies describing the clinical characteristics of hospital-onset PCP. METHODS:A retrospective review of medical records was performed to identify episodes of hospital-onset PCP in a tertiary care centre in Korea between May 2007 and January 2013. We investigated whether human-to-human contact during hospitalisation contributed to PCP development by molecular analysis of the genes encoding mitochondrial large ribosomal subunit (mtLSU) rRNA and dihydropteroate synthase (DHPS) and a review of hospitalisation history. RESULTS:During the study period, 129 patients (130 episodes) were diagnosed with PCP. Of these, respiratory specimens from 94 patients during 95 PCP episodes were available for analysis. Sixteen episodes (16.8%) were categorised as hospital-onset PCP. There was a trend toward a higher proportion of haematological malignancy (43.8% [7/16] vs. 20.3% [16/79]; P = 0.058) in patients with hospital-onset PCP compared to patients with community-onset PCP. mtLSU genotype 1 was the most common, occurring in 41 (43.2%) patients. There were four possible cases of nosocomial transmission. Mutation in DHPS was not observed in any PCP episode. CONCLUSIONS:PCP can be one of the causes of nosocomial pneumonia, although the mode of acquisition and transmission of P. jirovecii remains uncertain. mtLSU genotype 1 is the predominant P. jirovecii strain in Korea.
journal_name
BMC Infect Disjournal_title
BMC infectious diseasesauthors
Kim T,Lee SO,Hong HL,Lee JY,Kim SH,Choi SH,Kim MN,Kim YS,Woo JH,Sung Hdoi
10.1186/s12879-015-0847-6subject
Has Abstractpub_date
2015-02-26 00:00:00pages
102issn
1471-2334pii
10.1186/s12879-015-0847-6journal_volume
15pub_type
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