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01.12.2016 | Research article | Ausgabe 1/2016 Open Access

BMC Infectious Diseases 1/2016

Factors associated with clinical outcome in 25 patients with avian influenza A (H7N9) infection in Guangzhou, China

Zeitschrift:
BMC Infectious Diseases > Ausgabe 1/2016
Autoren:
Hui Wang, XinCai Xiao, Jianyun Lu, Zongqiu Chen, Kuibiao Li, Hui Liu, Lei Luo, Ming Wang, ZhiCong Yang

Abstract

Background

Guangzhou reported its first laboratory-confirmed case of influenza A (H7N9) on January 10, 2014. A total of 25 cases were reported from the first wave of the epidemic until April 8, 2014. The fatality rate was much higher than in previous reports. The objective of the current work was to describe the clinical and epidemiological characteristics of A (H7N9) patients in Guangzhou and explore possible reasons for the high fatality rate.

Methods

Clinical and epidemiological information regarding A (H7N9) cases in Guangzhou was collected through review of medical records and field research. Data regarding clinical and laboratory features, treatment, and outcomes were extracted.

Results

Of the 25 patients, 84 % (21/25) had one or more underlying diseases. Fifteen patients (60.0 %) developed moderate to severe acute respiratory distress syndrome (ARDS), and 14 (56 %) died of the ARDS or multiorgan failure. Patients with longer delay between onset of illness and initiation of oseltamivir treatment were more likely to develop ARDS. Elevated C-creative protein, aspartate aminotransferase, creatine kinase, and lymphocytopenia predicted a higher risk of developing ARDS.

Conclusions

The presence of underlying diseases and clinical complications predicted poor clinical outcome. Early oseltamivir treatment was associated with a reduced risk of developing ARDS.
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