Inference for a spatio-temporal model with partial spatial data: African horse sickness virus in Morocco

Fairbanks, Emma L, Baylis, Matthew ORCID: 0000-0003-0335-187X, Daly, Janet M and Tildesley, Michael J (2022) Inference for a spatio-temporal model with partial spatial data: African horse sickness virus in Morocco. EPIDEMICS, 39. 100566-.

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Official URL: http://dx.doi.org/10.1016/j.epidem.2022.100566

Abstract

African horse sickness virus (AHSV) is a vector-borne virus spread by midges (Culicoides spp.). The virus causes African horse sickness (AHS) disease in some species of equid. AHS is endemic in parts of Africa, previously emerged in Europe and in 2020 caused outbreaks for the first time in parts of Eastern Asia. Here we analyse a unique historic dataset from the 1989-1991 emergence of AHS in Morocco in a naïve population of equids. Sequential Monte Carlo and Markov chain Monte Carlo techniques are used to estimate parameters for a spatial-temporal model using a transmission kernel. These parameters allow us to observe how the transmissibility of AHSV changes according to the distance between premises. We observe how the spatial specificity of the dataset giving the locations of premises on which any infected equids were reported affects parameter estimates. Estimations of transmissibility were similar at the scales of village (location to the nearest 1.3 km) and region (median area 99 km<sup>2</sup>), but not province (median area 3000 km<sup>2</sup>). This data-driven result could help inform decisions by policy makers on collecting data during future equine disease outbreaks, as well as policies for AHS control.

Item Type:	Article
Uncontrolled Keywords:	Vector-borne disease, Spatio-temporal model, Bayesian inference
Divisions:	Faculty of Health and Life Sciences Faculty of Health and Life Sciences > Institute of Infection, Veterinary and Ecological Sciences
Depositing User:	Symplectic Admin
Date Deposited:	16 May 2022 14:25
Last Modified:	18 Jan 2023 21:02
DOI:	10.1016/j.epidem.2022.100566
Open Access URL:	https://www.sciencedirect.com/science/article/pii/...
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3154896