Dataset Information

Analysis of data from two influenza surveillance hospitals in Zhejiang province, China, for the period 2018-2022.

ABSTRACT:

Purpose

To assess the epidemiology of seasonal influenza in Huzhou City, Zhejiang Province, China, during 2018-2022 and provide insights for influenza prevention.

Methods

Following the National Influenza Surveillance Program, we conducted pathogen surveillance by randomly sampling throat swabs from cases with influenza-like illness (ILI) at two sentinel hospitals.

Results

From 2018 to 2022, a total of 3,813,471 cases were treated at two hospitals in Huzhou, China. Among them, there were 112,385 cases of Influenza-Like Illness (ILI), accounting for 2.95% of the total number of cases. A total of 11,686 ILI throat swab samples were tested for influenza viruses, with 1,602 cases testing positive for influenza virus nucleic acid, resulting in a positivity rate of 13.71%. Among the positive strains, there were 677 strains of A(H3N2) virus, 301 strains of A(H1N1) virus, 570 strains of B/Victoria virus, and 54 strains of B/Yamagata virus. The ILI percentage (ILI%) and influenza nucleic acid positivity rate showed winter-spring peaks in the years 2018, 2019, 2021, and 2022, with the peaks concentrated in January and February. Additionally, a small peak was observed in August 2022 during the summer season. No peak was observed during the winter-spring season of 2020. The highest proportion of ILI cases was observed in children aged 0-4 years, followed by school-age children aged 5-14 years. There was a positive correlation between ILI% and influenza virus nucleic acid positivity rate (r = 0.60, p < 0.05).

Conclusions

The influenza outbreak in Huzhou from 2020 to 2022 was to some extent influenced by the COVID-19 pandemic and public health measures. After the conclusion of the COVID-19 pandemic, the influenza outbreak in Huzhou may become more severe. Therefore, it is crucial to promptly assess the influenza outbreak trends based on the ILI% and the positivity rate of influenza virus nucleic acid tests.

SUBMITTER: Wang Y

PROVIDER: S-EPMC10901301 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature

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Publications

Analysis of data from two influenza surveillance hospitals in Zhejiang province, China, for the period 2018-2022.

Wang Yuda Y Liu Yan Y Liu Guangtao G Sun Xiuxiu X Zhang Zizhe Z Shen Jianyong J

PloS one 20240228 2

<h4>Purpose</h4>To assess the epidemiology of seasonal influenza in Huzhou City, Zhejiang Province, China, during 2018-2022 and provide insights for influenza prevention.<h4>Methods</h4>Following the National Influenza Surveillance Program, we conducted pathogen surveillance by randomly sampling throat swabs from cases with influenza-like illness (ILI) at two sentinel hospitals.<h4>Results</h4>From 2018 to 2022, a total of 3,813,471 cases were treated at two hospitals in Huzhou, China. Among the ...[more]

PMID: 38416761

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Dataset Information

Analysis of data from two influenza surveillance hospitals in Zhejiang province, China, for the period 2018-2022.

Purpose

Methods

Results

Conclusions

Publications

Analysis of data from two influenza surveillance hospitals in Zhejiang province, China, for the period 2018-2022.

Similar Datasets

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