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Symbolic transfer entropy reveals the age structure of pandemic influenza transmission from high-volume influenza-like illness data
Julia Gog
Bryan Grenfell
Cecile Viboud
Stephen M Kissler
Novel Coronavirus
Acceso Abierto
Atribución-NoComercial-SinDerivadas
10.1101/19005710
Existing methods to infer the relative roles of age groups in epidemic transmission can normally only accommodate a few age classes, and/or require data that are highly specific for the disease being studied. Here, symbolic transfer entropy (STE), a measure developed to identify asymmetric transfer of information between stochastic processes, is presented as a way to determine which age groups drive an epidemic. STE provides a ranking of which age groups dominate transmission, rather than a reconstruction of the explicit between-age-group transmission matrix. Using simulations, we establish that STE can identify which age groups dominate transmission, even when there are differences in reporting rates between age groups and even if the data is noisy. Then, the pairwise STE is calculated between time series of influenza-like illness for 12 age groups in 884 US cities during the autumn of 2009. Elevated STE from 5-19 year-olds indicates that school-aged children were the most important transmitters of infection during the autumn wave of the 2009 pandemic in the US. The results may be partially confounded by higher rates of physician-seeking behaviour in children compared to adults, but it is unlikely that differences in reporting rates can explain the observed differences in STE. ### Competing Interest Statement The authors have declared no competing interest. ### Funding Statement SMK was supported by a Gates Cambridge scholarship. ### Author Declarations All relevant ethical guidelines have been followed and any necessary IRB and/or ethics committee approvals have been obtained. Yes All necessary patient/participant consent has been obtained and the appropriate institutional forms have been archived. Yes Any clinical trials involved have been registered with an ICMJE-approved registry such as ClinicalTrials.gov and the trial ID is included in the manuscript. Yes I have followed all appropriate research reporting guidelines and uploaded the relevant Equator, ICMJE or other checklist(s) as supplementary files, if applicable. Yes Data will be available from https://github.com/skissler/STE upon publication <https://github.com/skissler/STE>
Cold Spring Harbor Laboratory Press
2019
Preimpreso
https://www.medrxiv.org/content/10.1101/19005710v1
Inglés
VIRUS RESPIRATORIOS
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