Candidemia among Hospitalized Pediatric Patients Caused by Several Clonal Lineages of Candida parapsilosis

is the second most common cause of candidemia in some geographical areas and in children in particular. Yet, the proportion among children varies, for example, from 10.4% in Denmark to 24.7% in Tehran, Iran. As this species is also known to cause hospital outbreaks, we explored if the relatively hig...

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Published in:Journal of fungi (Basel) 2022-02, Vol.8 (2), p.183
Main Authors: Hare, Rasmus Krøger, Arastehfar, Amir, Rosendahl, Søren, Charsizadeh, Arezoo, Daneshnia, Farnaz, Eshaghi, Hamid, Mirhendi, Hossein, Boekhout, Teun, Hagen, Ferry, Arendrup, Maiken Cavling
Format: Article
Language:English
Subjects:
AFLP
Amplified fragment length polymorphism
Candida parapsilosis
Candida parapsilosis species complex
Candidemia
Children
Discriminant analysis
DNA fingerprinting
Epidemics
Ethics
genotyping
microsatellites
Outbreaks
Patients
Pediatrics
Population
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Summary:is the second most common cause of candidemia in some geographical areas and in children in particular. Yet, the proportion among children varies, for example, from 10.4% in Denmark to 24.7% in Tehran, Iran. As this species is also known to cause hospital outbreaks, we explored if the relatively high number of pediatric cases in Tehran could in part be explained by undiscovered clonal outbreaks. Among 56 complex isolates, 50 were genotyped by Amplified Fragment Length Polymorphism (AFLP) fingerprinting and microsatellite typing and analyzed for nucleotide polymorphisms by and sequencing. AFLP fingerprinting grouped Iranian isolates in two main clusters. Microsatellite typing separated the isolates into five clonal lineages, of which four were shared with Danish isolates, and with no correlation to the AFLP patterns. and sequencing revealed few polymorphisms in leading to amino-acid substitutions (D133Y, Q250K, I302T, and R398I), with no influence on azole-susceptibilities. Collectively, this study demonstrated that there were no clonal outbreaks at the Iranian pediatric ward. Although possible transmission of a diverse community within the hospital cannot be ruled out, the study also emphasizes the necessity of applying appropriately discriminatory methods for outbreak investigation.
ISSN:2309-608X
2309-608X
DOI:10.3390/jof8020183