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. 2016 Jun 1;3:44. doi: 10.3389/fvets.2016.00044

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Copyright © 2016 Kinsley, Patterson, VanderWaal, Craft and Perez.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Transmission kernel calculated from the probability of transmission through indirect contact at 1, 5, 10, and 50 km prior to the implementation of control measures. The probability of transmission is described by the equation P(x) = 3.693 × e^(−0.118x) + 0.3307 where P(x) is the probability of spatial transmission between infected farm i and susceptible farm j located x distance apart in kilometers. Values were obtained through expert opinion.