Epidemic features of seasonal influenza transmission among eight different climate zones in Gansu, China
Description
<p><b>Backgrounds</b>: Seasonal influenza remains epidemic globally with a substantial health burden. Understanding the transmission patterns and epidemic features of influenza may facilitate the improvement of preventive and control measures. This study aims to assess the epidemic features of influenza among different climate zones and identify high-risk zones across Gansu province, China. <br/></p><p><b>Methods</b>: We collected weekly influenza cases at county-level between 1st January 2012 and 31st December 2016, as well as climate zones classification shapefile data from Köppen-Geiger climate map. We compared the epidemic features (Frequency index (α), Duration index (β) and Intensity index (γ)) of influenza among different climate zones. Spatial cluster analysis was used to examine the high-risk areas of transmission of influenza. <br/></p><p><b>Results</b>: The distribution of cases existed significant differences among eight climate zones (F-test: 267.02, p < 0.05). The highest mean weekly incidence rate (per 100,000 population) was 0.59 in snow climate with dry winter and warm summer (Dwb). The primary (relative risk (RR): 3.61, p < 0.001) and secondary (RR: 2.45, p < 0.001) clusters were located in Dwb. The highest values of α, β and γ were 1.00, 261 and 154.38 in Dwb. The hot spots (high-high clusters) of the epidemic indices were detected in Dwb. <br/></p><p><b>Conclusions</b>: This study found the variability of epidemic features of influenza among eight climate zones. We highlight that Dwb was the high-risk zone where influenza clustered with the highest incidence rate and epidemic temporal indices. This provide further insight into potential improvement of preventive measures by climate zones to minimize the impact of epidemics.</p>
Impact and interest:
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| ID Code: | 202654 | ||
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| Item Type: | Contribution to Journal (Journal Article) | ||
| Refereed: | Yes | ||
| ORCID iD: |
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| Measurements or Duration: | 8 pages | ||
| Keywords: | China, Climate zones, Gansu, Köppen-Geiger climate classification, Seasonal influenza | ||
| DOI: | 10.1016/j.envres.2020.109189 | ||
| ISSN: | 0013-9351 | ||
| Pure ID: | 64453776 | ||
| Divisions: | Current > Research Centres > Centre for Immunology and Infection Control Past > Institutes > Institute of Health and Biomedical Innovation Current > QUT Faculties and Divisions > Faculty of Health |
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| Funding Information: | Y. Z. was supported by the China Scholarship Council Postgraduate Scholarship and the Queensland University of Technology Higher Degree Research Tuition Fee Sponsorship. W. H. was supported by an Australian Research Council Future Fellowship (award number FT140101216 ). The study was partially supported by the Gansu Province Health Research Management Project ( GSWSKY-2019-83 ). We thank the Gansu Provincial Center for Disease Control and Prevention, and the hospitals and laboratories in the surveillance network for providing influenza surveillance data. | ||
| Copyright Owner: | 2020 Elsevier Inc | ||
| Copyright Statement: | This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au | ||
| Deposited On: | 29 Jul 2020 01:08 | ||
| Last Modified: | 03 May 2024 17:38 |
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