Transmission Dynamics of African Swine Fever Virus, South Korea, 2019
Dae Sung Yoo
1, Younjung Kim
1 , Eune Sub Lee, Jun Sik Lim, Seong Keun Hong, Il Seob Lee, Chung Sik Jung, Ha Chung Yoon, Sung Hwan Wee, Dirk U. Pfeiffer, and Guillaume Fournié
Author affiliations: Animal and Plant Quarantine Agency, Gimcheon, South Korea (D.S. Yoo, E.S. Lee, S.K. Hong, I.S. Lee, C.S. Jung, H.C. Yoon, S.H. Wee); Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong, China (Y. Kim, D.U. Pfeiffer); Kangwon National University College of Veterinary Medicine, Chuncheon, South Korea (J.S. Lim); Royal Veterinary College, London, UK (D.U. Pfeiffer, G. Fournié)
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Figure 4
Figure 4. Distribution of the number of African swine fever virus–infected premises connections through vehicle movements, South Korea, 2019. IP out-degree represents the number of other IPs to which an IP sent >1 vehicle; IP in-degree represents the number of other IPs from which an IP received >1 vehicle. With 1-day (A), 3-day (B), or 6-day (C) assumptions for the duration of vehicle infectiousness, only the movements made up to 20 days before an exit farm reported suspicion of ASFV infection and before an entry farm reported suspicion of infection were considered. In the boxplots, center horizontal lines represent medians, and box limits represent upper and lower quartiles. Upper and lower whiskers extend to the largest and smallest values within 1.5× interquartile ranges. The point represents an outlier. ASFV, African swine fever virus; IP, infected premises.
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