Role of Wild Boar in the Spread of Classical Swine Fever in Japan



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Ito, Satoshi and Jurado Díaz, Cristina and Bosch López, Jaime Alfonso and Ito, Mitsugi and Sánchez-Vizcaíno, José Manuel and Isoda, Norikazu and Sakoda, Yoshihiro (2019) Role of Wild Boar in the Spread of Classical Swine Fever in Japan. Pathogens, 8 (4). p. 206. ISSN 2076-0817

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Since September 2018, nearly 900 notifications of classical swine fever (CSF) have been reported in Gifu Prefecture (Japan) affecting domestic pig and wild boar by the end of August 2019. To determine the epidemiological characteristics of its spread, a spatio-temporal analysis was performed using actual field data on the current epidemic. The spatial study, based on standard deviational ellipses of official CSF notifications, showed that the disease likely spread to the northeast part of the prefecture. A maximum significant spatial association estimated between CSF notifications was 23 km by the multi-distance spatial cluster analysis. A space-time permutation analysis identified two significant clusters with an approximate radius of 12 and 20 km and 124 and 98 days of duration, respectively. When the area of the identified clusters was overlaid on a map of habitat quality, approximately 82% and 75% of CSF notifications, respectively, were found in areas with potential contact between pigs and wild boar. The obtained results provide information on the current CSF epidemic, which is mainly driven by wild boar cases with sporadic outbreaks on domestic pig farms. These findings will help implement control measures in Gifu Prefecture.

Item Type:Article
Uncontrolled Keywords:classical swine fever; spatio-temporal analysis; wild boar; transboundary diseases
Subjects:Medical sciences > Veterinary > Swine
Medical sciences > Veterinary > Veterinary pathology
ID Code:65119
Deposited On:27 Apr 2021 16:34
Last Modified:28 Apr 2021 07:37

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