Assessing Biosecurity Risks for the Introduction and Spread of Diseases Among Commercial Sheep Properties in New South Wales, Australia, Using Foot-and-Mouth Disease as a Case Study

Frontiers in Veterinary Science
Jake FountainMarta Hernández-Jover

Abstract

Sheep production systems are a major industry in Australia, with a gross value of roughly $4.66 billion; 87.3% of which is attributable to export markets. Exotic diseases such as foot-and-mouth disease (FMD) are a potential threat to the viability of Australia's export market. Previous outbreaks of FMD in developed countries, and challenges in the management of onshore biosecurity, signify the importance of on-farm biosecurity in controlling disease transmission. This study aims to investigate the risk of disease introduction and spread among New South Wales (NSW) sheep properties using FMD as a case study and draw recommendation for the industry. Exposure and partial consequence assessments, using scenario trees and Monte Carlo stochastic modeling, were conducted to identify pathways of introduction and spread and calculate the probabilities of these pathways occurring. Input parameters were estimated from the data obtained during qualitative interviews with producers and scientific literature. According to the reported practices of sheep producers and assuming each pathway was carrying the FMD virus, the exposure assessment estimates the median (5-95%) probability of FMD exposure of sheep on a naive property to be 0.619 (0.54...Continue Reading

References

Jun 2, 2001·The Veterinary Record·A I DonaldsonT Mikkelsen
Feb 24, 2007·Preventive Veterinary Medicine·Michael P WardLinda D Highfield
Mar 31, 2009·Preventive Veterinary Medicine·John H M Thornley, James France
Nov 23, 2011·Australian Veterinary Journal·I J East, I Foreman
Jan 12, 2012·PloS One·Marnie L Brennan, Robert M Christley
Apr 12, 2013·BMC Veterinary Research·Marnie L Brennan, Robert M Christley

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