Influenza Surveillance Results for Sichuan Province, China, 2023–2025

16.70% was the average influenza positivity rate over three years, peaking at 19.31% in 2023. The dataset contains results from an analysis of influenza-like illness (ILI) data collected by China's Influenza monitoring Information System from sentinel hospitals across five areas of Sichuan Province. It was authored by Lijun Zhou and last updated on 2026-05-05.

Use Cases

• Modeling spatio-temporal diffusion patterns based on the described spread from the Chengdu Plain to peripheral areas.
• Analyzing strain-specific epidemic trends based on the temporal shift between A(H3N2), A(H1N1)pdm09, and B(Victoria) lineages.
• Studying age-specific incidence based on the described concentration of cases in children aged 0–14.
• Evaluating cross-correlation and lag times between regions for early warning system development, as suggested in the conclusion.

Strengths

• Provides a three-year time series (2023–2025) with specific annual positivity rates.
• Includes detailed demographic breakdowns, such as the 0–4 age group comprising 40–60% of cases.
• Contains spatial analysis results, including that 56.3% of provincial cases originated from the Chengdu Plain.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset is very small (33.7 KB), indicating limited scope, likely a summary or analysis document rather than raw case-level data.

Provenance

Source

Influenza monitoring Information System of China via sentinel hospitals in Sichuan Province.

Collection Method

Descriptive epidemiological techniques, cross-correlation analysis, Dynamic Time Warping (DTW), and spatio-temporal coupling coefficient calculation.

Time Range

2023–2025

Freshness

Last updated 2026-05-05 05:28:33; freshness should be verified.

Geography

Sichuan Province, China, with focus on five areas including the Chengdu Plain.