Abstract:
BACKGROUND:Molecular testing for viral pathogens has resulted in increasing detection of multiple viruses in respiratory secretions of ill children. The clinical impact of multiple virus infections on clinical presentation and outcome is unclear. OBJECTIVES:To compare clinical characteristics and viral load between children with multiple virus versus single virus illnesses. PATIENTS/METHODS:Eight hundred and ninety-three residual nasal wash samples from children treated for respiratory illness at Children's Hospital, Seattle, from September 2003 to September 2004 were evaluated by quantitative PCR for respiratory syncytial virus (RSV), human metapneumovirus (hMPV), influenza (Flu), parainfluenza, adenoviruses, and coronaviruses (CoV). Illness severity and patient characteristics were abstracted from medical charts. RESULTS:Coinfections were identified in 103 (18%) of 566 virus-positive samples. Adenovirus was most commonly detected in coinfections (52%), followed by CoV (50%). Illnesses with a single virus had increased risk of oxygen requirement (P = 0·02), extended hospital stays (P = 0·002), and admissions to the inpatient (P = 0·02) or intensive care units (P = 0·04). For Adv and PIV-1, multiple virus illnesses had a significantly lower viral load (log(10) copies/ml) than single virus illnesses (4·2 versus 5·6, P = 0·007 and 4·2 versus 6·9, P < 0·001, respectively). RSV, Flu-A, PIV-3, and hMPV viral loads were consistently high whether or not another virus was detected. CONCLUSIONS:Illnesses with multiple virus detections were correlated with less severe disease. The relationship between viral load and multiple virus infections was virus specific, and this may serve as a way to differentiate viruses in multiple virus infections.
journal_name
Influenza Other Respir Virusesjournal_title
Influenza and other respiratory virusesauthors
Martin ET,Kuypers J,Wald A,Englund JAdoi
10.1111/j.1750-2659.2011.00265.xsubject
Has Abstractpub_date
2012-01-01 00:00:00pages
71-7issue
1eissn
1750-2640issn
1750-2659journal_volume
6pub_type
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journal_title:Influenza and other respiratory viruses
pub_type: 杂志文章,meta分析
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journal_title:Influenza and other respiratory viruses
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doi:10.1111/irv.12021
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