BACKGROUND: Human parechoviruses (HPeVs) have been associated with severe conditions such as neonatal sepsis and meningitis in young children. Rapid identification of an infectious agent in such serious conditions in these patients is essential for adequate decision making regarding treatment and hospital stay. OBJECTIVES: We have developed an HPeV specific real-time PCR assay based on the conserved 5'untranslated region. STUDY DESIGN: To determine the detection limit of the assay, serial dilutions of HPeV in vitro RNA were tested in a background of HPeV and EV RNA-negative cerebrospinal fluid (CSF). The specificity was tested by analyzing culture isolates of HPeV 1-6, enterovirus (EV) types, human rhinoviruses (HRVs) and hepatitis A virus (HAV). To establish diagnostic relevance, 522 CSF samples from children <5 years were tested. RESULTS: The detection limit of the assay was 75 copies of HPeV cDNA per reaction. The assay was highly specific for HPeV, detecting all HPeV types. We identified HPeV infections in CSF of 20 children (3.8%), all with severe conditions such as sepsis and meningitis. CONCLUSIONS: These results suggest that HPeV screening of paediatric clinical samples should be included in viral diagnostics in suspected cases of neonatal sepsis and meningitis.
BACKGROUND:Human parechoviruses (HPeVs) have been associated with severe conditions such as neonatal sepsis and meningitis in young children. Rapid identification of an infectious agent in such serious conditions in these patients is essential for adequate decision making regarding treatment and hospital stay. OBJECTIVES: We have developed an HPeV specific real-time PCR assay based on the conserved 5'untranslated region. STUDY DESIGN: To determine the detection limit of the assay, serial dilutions of HPeV in vitro RNA were tested in a background of HPeV and EV RNA-negative cerebrospinal fluid (CSF). The specificity was tested by analyzing culture isolates of HPeV 1-6, enterovirus (EV) types, human rhinoviruses (HRVs) and hepatitis A virus (HAV). To establish diagnostic relevance, 522 CSF samples from children <5 years were tested. RESULTS: The detection limit of the assay was 75 copies of HPeV cDNA per reaction. The assay was highly specific for HPeV, detecting all HPeV types. We identified HPeV infections in CSF of 20 children (3.8%), all with severe conditions such as sepsis and meningitis. CONCLUSIONS: These results suggest that HPeV screening of paediatric clinical samples should be included in viral diagnostics in suspected cases of neonatal sepsis and meningitis.
Authors: Nigel J McLeish; Jeroen Witteveldt; Lucy Clasper; Chloe McIntyre; E Carol McWilliam Leitch; Alison Hardie; Susan Bennett; Rory Gunson; William F Carman; Susan A Feeney; Peter V Coyle; Barry Vipond; Peter Muir; Kimberley Benschop; Katja Wolthers; Matti Waris; Riikka Osterback; Ingo Johannessen; Kate Templeton; Heli Harvala; Peter Simmonds Journal: J Clin Microbiol Date: 2012-06-27 Impact factor: 5.948
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Authors: B M Westerhuis; K S M Benschop; G Koen; Y B Claassen; K Wagner; A Q Bakker; K C Wolthers; T Beaumont Journal: J Virol Date: 2015-05-06 Impact factor: 5.103
Authors: W Allan Nix; Kaija Maher; E Susanne Johansson; Bo Niklasson; A Michael Lindberg; Mark A Pallansch; M Steven Oberste Journal: J Clin Microbiol Date: 2008-06-04 Impact factor: 5.948