Relationship between respiratory viral load and lung lesion severity: a study in 24 cases of pandemic H1N1 2009 influenza A pneumonia.

Abstract:

OBJECTIVE:To investigate the relationship between respiratory viral load and lung lesion severity of patients with pandemic H1N1 2009 influenza A pneumonia. STUDY DESIGN:Cross-sectional observation study. METHODS:24 consecutive H1N1 influenza patients with viral pneumonia (13 males, 11 females, mean age: 17.5 years) during their presentation to hospital were retrospectively analysed. Viral load were first measured on average 5.2 days after the onset of symptoms. The initial CT and viral load measurement was carried on the same day in 13 patients. The rest were carried out with a mean interval time of 1.5 days. All patients had viral load follow-up till turned negative. Thirteen patients had radiological follow-up. RESULTS:There was no significant correlation between the initial lung lesion severity and viral load (P=0.4). Both viral load and lung lesion severity decreased over time, being highest value at initial presentation. The patients had higher initial viral load or higher initial lung lesion severity tended to be slower in resolving. The lung lesion decreased at a slower rate than viral load. CONCLUSIONS:While there was no correlation between the initial viral load and lung lesion severity, these two indices provide valuable information for epidemiological control.

journal_name

J Thorac Dis

authors

Lu PX,Deng YY,Yang GL,Liu WL,Liu YX,Huang H,Wang YX

doi

10.3978/j.issn.2072-1439.2012.08.02

subject

Has Abstract

pub_date

2012-08-01 00:00:00

pages

377-83

issue

4

eissn

2072-1439

issn

2077-6624

pii

jtd-04-04-377

journal_volume

4

pub_type

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