Survival, Persistence, and Isolation of the Emerging Multidrug-Resistant Pathogenic Yeast Candida auris on a Plastic Health Care Surface.

Abstract:

:The emerging multidrug-resistant pathogenic yeast Candida auris represents a serious threat to global health. Unlike most other Candida species, this organism appears to be commonly transmitted within health care facilities and causes health care-associated outbreaks. To better understand the epidemiology of this emerging pathogen, we investigated the ability of C. auris to persist on plastic surfaces common in health care settings compared with that of Candida parapsilosis, a species known to colonize the skin and plastics. Specifically, we compiled comparative and quantitative data essential to understanding the vehicles of spread and the ability of both species to survive and persist on plastic surfaces under controlled conditions (25°C and 57% relative humidity), such as those found in health care settings. When a test suspension of 104 cells was applied and dried on plastic surfaces, C. auris remained viable for at least 14 days and C. parapsilosis for at least 28 days, as measured by CFU. However, survival measured by esterase activity was higher for C. auris than C. parapsilosis throughout the 28-day study. Given the notable length of time Candida species survive and persist outside their host, we developed methods to more effectively culture C. auris from patients and their environment. Using our enrichment protocol, public health laboratories and researchers can now readily isolate C. auris from complex microbial communities (such as patient skin, nasopharynx, and stool) as well as environmental biofilms, in order to better understand and prevent C. auris colonization and transmission.

journal_name

J Clin Microbiol

authors

Welsh RM,Bentz ML,Shams A,Houston H,Lyons A,Rose LJ,Litvintseva AP

doi

10.1128/JCM.00921-17

subject

Has Abstract

pub_date

2017-10-01 00:00:00

pages

2996-3005

issue

10

eissn

0095-1137

issn

1098-660X

pii

JCM.00921-17

journal_volume

55

pub_type

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