Livestock movement informs the risk of disease spread in traditional production systems in East Africa

Abstract In Africa, livestock are important to local and national economies, but their productivity is constrained by infectious diseases. Comprehensive information on livestock movements and contacts is required to devise appropriate disease control strategies; yet, understanding contact risk in sy...

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Autores principales:	Divine Ekwem, Thomas A. Morrison, Richard Reeve, Jessica Enright, Joram Buza, Gabriel Shirima, James K. Mwajombe, Tiziana Lembo, J. Grant C. Hopcraft
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ef6e0df7932b44359bb4b2d3113e2bbc
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spelling	oai:doaj.org-article:ef6e0df7932b44359bb4b2d3113e2bbc2021-12-02T16:27:55ZLivestock movement informs the risk of disease spread in traditional production systems in East Africa10.1038/s41598-021-95706-z2045-2322https://doaj.org/article/ef6e0df7932b44359bb4b2d3113e2bbc2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95706-zhttps://doaj.org/toc/2045-2322Abstract In Africa, livestock are important to local and national economies, but their productivity is constrained by infectious diseases. Comprehensive information on livestock movements and contacts is required to devise appropriate disease control strategies; yet, understanding contact risk in systems where herds mix extensively, and where different pathogens can be transmitted at different spatial and temporal scales, remains a major challenge. We deployed Global Positioning System collars on cattle in 52 herds in a traditional agropastoral system in western Serengeti, Tanzania, to understand fine-scale movements and between-herd contacts, and to identify locations of greatest interaction between herds. We examined contact across spatiotemporal scales relevant to different disease transmission scenarios. Daily cattle movements increased with herd size and rainfall. Generally, contact between herds was greatest away from households, during periods with low rainfall and in locations close to dipping points. We demonstrate how movements and contacts affect the risk of disease spread. For example, transmission risk is relatively sensitive to the survival time of different pathogens in the environment, and less sensitive to transmission distance, at least over the range of the spatiotemporal definitions of contacts that we explored. We identify times and locations of greatest disease transmission potential and that could be targeted through tailored control strategies.Divine EkwemThomas A. MorrisonRichard ReeveJessica EnrightJoram BuzaGabriel ShirimaJames K. MwajombeTiziana LemboJ. Grant C. HopcraftNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Divine Ekwem Thomas A. Morrison Richard Reeve Jessica Enright Joram Buza Gabriel Shirima James K. Mwajombe Tiziana Lembo J. Grant C. Hopcraft Livestock movement informs the risk of disease spread in traditional production systems in East Africa
description	Abstract In Africa, livestock are important to local and national economies, but their productivity is constrained by infectious diseases. Comprehensive information on livestock movements and contacts is required to devise appropriate disease control strategies; yet, understanding contact risk in systems where herds mix extensively, and where different pathogens can be transmitted at different spatial and temporal scales, remains a major challenge. We deployed Global Positioning System collars on cattle in 52 herds in a traditional agropastoral system in western Serengeti, Tanzania, to understand fine-scale movements and between-herd contacts, and to identify locations of greatest interaction between herds. We examined contact across spatiotemporal scales relevant to different disease transmission scenarios. Daily cattle movements increased with herd size and rainfall. Generally, contact between herds was greatest away from households, during periods with low rainfall and in locations close to dipping points. We demonstrate how movements and contacts affect the risk of disease spread. For example, transmission risk is relatively sensitive to the survival time of different pathogens in the environment, and less sensitive to transmission distance, at least over the range of the spatiotemporal definitions of contacts that we explored. We identify times and locations of greatest disease transmission potential and that could be targeted through tailored control strategies.
format	article
author	Divine Ekwem Thomas A. Morrison Richard Reeve Jessica Enright Joram Buza Gabriel Shirima James K. Mwajombe Tiziana Lembo J. Grant C. Hopcraft
author_facet	Divine Ekwem Thomas A. Morrison Richard Reeve Jessica Enright Joram Buza Gabriel Shirima James K. Mwajombe Tiziana Lembo J. Grant C. Hopcraft
author_sort	Divine Ekwem
title	Livestock movement informs the risk of disease spread in traditional production systems in East Africa
title_short	Livestock movement informs the risk of disease spread in traditional production systems in East Africa
title_full	Livestock movement informs the risk of disease spread in traditional production systems in East Africa
title_fullStr	Livestock movement informs the risk of disease spread in traditional production systems in East Africa
title_full_unstemmed	Livestock movement informs the risk of disease spread in traditional production systems in East Africa
title_sort	livestock movement informs the risk of disease spread in traditional production systems in east africa
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ef6e0df7932b44359bb4b2d3113e2bbc
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Livestock movement informs the risk of disease spread in traditional production systems in East Africa

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