Influenza Surveillance Data from Beijing, 2015-2024, with Age-Stratified Rates

2,468,817 influenza-like illness (ILI) cases from multi-source surveillance in Chaoyang District, Beijing, China, spanning 2015 to 2024. The dataset, authored by Xing Gao and shared under CC-BY-4.0, was last updated in May 2026. It includes virological results and reported case data analyzed using segmented interrupted time-series models.

Use Cases

• Modeling the 'increase-suppression-resurgence' pattern of influenza activity based on ILI% time-series data.
• Analyzing shifts in viral strain dominance, including the absence of B/Yamagata lineage, based on virological surveillance results.
• Calculating age-stratified rate ratios to compare post-pandemic burden across children, adults, and seniors.
• Characterizing altered epidemic seasonality and non-linear temporal dynamics using the described GAMM-AR(1) modeling framework.

Strengths

• Contains a large count of 2,468,817 ILI cases for analysis.
• Covers a nine-year time range from 2015 to 2024, capturing pre-pandemic, pandemic, and post-pandemic periods.
• Integrates multiple data sources: ILI surveillance, virological results, and reported cases.
• Provides specific, model-derived metrics such as a post-pandemic rebound rate ratio (RR=1.72) and age-stratified RRs.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count for the underlying tabular data is unknown, which may limit suitability assessment.
• The dataset is very small (12.4 KB), suggesting it may contain summary statistics or a manuscript rather than the raw surveillance records.

Provenance

Source

Multi-source surveillance data from Chaoyang District, Beijing, China.

Collection Method

Comprehensive epidemiological analysis of surveillance records, virological results, and reported cases using segmented interrupted time-series (ITS) and generalized additive mixed models (GAMMs).

Time Range

2015 to 2024

Freshness

Last updated 2026-05-14 05:35:32; freshness should be verified.

Geography

Chaoyang District, Beijing, China, described as a core urban area.