Characteristics of Seasonal Influenza Virus Activity in a Subtropical City in China, 2013-2019.

ABSTRACT: To optimize seasonal influenza vaccination programs in regions with potentially complicated seasonal patterns, the epidemiological characteristics of seasonal influenza activity in a subtropical city of China were explored. Influenza virus data of patients with influenza-like illness (ILI) during 2013-2019 were collected from two sentinel hospitals in a subtropical region of China, Yichang city. The influenza virus positive rate among sampled ILI cases served as a proxy to estimate influenza seasonal characteristics, including periodicity, duration, peaks, and predominant subtypes/lineages. Epidemiological features of different years, seasons and age groups were analyzed, and vaccine mismatches were identified. In total, 8693 ILI cases were included; 1439 (16.6%) were laboratory-confirmed

SUBMITTER: Zhu A 

PROVIDER: S-EPMC7157579 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature