Bayesian phylodynamics reveals the transmission dynamics of avian influenza A(H7N9) virus at the human–live bird market interface in China-Reference-Cited by-同舟云学术

Bayesian phylodynamics reveals the transmission dynamics of avian influenza A(H7N9) virus at the human–live bird market interface in China

Published:2023-04-17 Issue:17 Volume:120 Page:
ISSN:0027-8424
Container-title:Proceedings of the National Academy of Sciences
language:en
Short-container-title:Proc. Natl. Acad. Sci. U.S.A.

Author:

Guinat Claire¹²^ORCID,Tang Hao³^ORCID,Yang Qiqi⁴^ORCID,Valenzuela Agüí Cecilia¹²^ORCID,Vaughan Timothy G.¹²^ORCID,Scire Jérémie¹²^ORCID,Yu Hongjie⁵,Wang Wei⁵,Chen Zhiyuan⁵,Ducatez Mariette F.⁶^ORCID,Stadler Tanja¹²^ORCID

Affiliation:

1. Department of Biosystems Science and Engineering, ETH Zürich, 4058 Basel, Switzerland

2. Swiss Institute of Bioinformatics, 1015 Lausanne, Switzerland

3. Centre for Biosecurity and One Health, Harry Butler Institute, Murdoch University, Murdoch, WA 6150, Australia

4. Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544

5. School of Public Health, Fudan University, Key Laboratory of Public Health Safety, Ministry of Education, 200032 Shanghai, China

6. Unit of Host-Pathogens Interactions, University of Toulouse, National Research Institute for Agriculture, Food and the Environment, National Veterinary School of Toulouse, 31300 Toulouse, France

Abstract

In 2013 to 2017, avian influenza A(H7N9) virus has caused five severe epidemic waves of human infections in China. The role of live bird markets (LBMs) in the transmission dynamics of H7N9 remains unclear. Using a Bayesian phylodynamic approach, we shed light on past H7N9 transmission events at the human–LBM interface that were not directly observed using case surveillance data-based approaches. Our results reveal concurrent circulation of H7N9 lineages in Yangtze and Pearl River Delta regions, with evidence of local transmission during each wave. Our results indicate that H7N9 circulated in humans and LBMs for weeks to months before being first detected. Our findings support the seasonality of H7N9 transmission and suggest a high number of underreported infections, particularly in LBMs. We provide evidence for differences in virus transmissibility between low and highly pathogenic H7N9. We demonstrate a regional spatial structure for the spread of H7N9 among LBMs, highlighting the importance of further investigating the role of local live poultry trade in virus transmission. Our results provide estimates of avian influenza virus (AIV) transmission at the LBM level, providing a unique opportunity to better prepare surveillance plans at LBMs for response to future AIV epidemics.

Funder

EC | Horizon Europe | Excellent Science | HORIZON EUROPE Marie Sklodowska-Curie Actions

Publisher

Proceedings of the National Academy of Sciences

Subject

Multidisciplinary

Link

https://pnas.org/doi/pdf/10.1073/pnas.2215610120

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