Abstract:

Objective To analyze the etiological characteristics of influenza in Chizhou from 2018 to 2019,and to provide a reference for the prevention and treatment of influenza. Methods Nucleic acid in the samples of pharyngeal swabs from influenza-like cases was determined by real-time fluorescence quantitative polymerase chain reaction （PCR）. Results The determination rates of influenza virus were 30.09% in 2018 and 28.92% in 2019（P>0.05）. The pandemic was characterized by a mixture of influenza A and B viruses. There was no statistical significance for the determination rate of influenza virus between males and females（P>0.05）. The determination rate in 5-14-year-old group（37.03%） was the highest. The virus determination rate of the outbreak was higher than that of the sentinel monitoring（P<0.01）.Conclusions The prevention and control of influenza in Chizhou focuses on a mixture of influenza A and B viruses,and the key population is teenagers and children,especially primary and secondary school students. The surveillance of influenza etiology should be strengthened,and the pandemic situation should be monitored.

Key words: Influenza, H1N1 influenza A, Etiology, Real-time fluorescence quantitative polymerase chain reaction