Received: 27-05-2021
Accepted: 21-02-2022
DOI:
Views
Downloads
How to Cite:
Assessment of the Risk for the Transmission of Porcine Epidemic Diarrhea Virusat Slaughterhouses based on Transportation Network Analysis
,
Tran Thi Huong Giang
1
,
Lai Thi Lan Huong
1
,
Vu Viet Anh
2
Keywords
Porcine Epidemic Diarrhea virus, slaughterhouses, transportation network, risk
Abstract
Porcine Epidemic Diarrhea (PED) is an acute infectious disease caused by the PED virus (PEDV) with high mortality, causing huge economic losses. The objective of our study was to assess the risk of PEDV cross-contamination between farms through the movement of pig herds. Therefore,the pig transportation network analysis method was applied at some slaughterhouses in the North. Summarized data of 128 farms indicated that of four slaughterhouses, SL2 was slaughterhouse with the highest number of farms transported to (76 farms), of which 30.3% were positive for PEDV. The results of the transportation network analysis showed that, in total, there were 132 nodes, 148 edges, and SL2 was the most central node with the highest value of degree centrality of 82. The percentage of PEDV positive farms in 7 cluster-edge ranged from 16.7 to 44%, in which cluster-edge SL1, SL2, SL3 had more nodes as well as a higher percentage of PEDV positive farms than other clusters. The risk of a farm infected with PEDV when exposed to SL1, SL2, SL3 was higher than 3.57, 2.17, and 3.24 times, respectively, when exposed to SL4.
References
Alexandersen S., Quan M., Murphy C., Knight J. & Zhang Z. (2003). Studies of quantitative parameters of virus excretion and transmission in pigs and cattle experimentally infected with foot-and-mouth disease virus. J Comp Pathol.129(4): 268-82.
Boniotti M.B., Papetti A., Bertasio C., Giacomini E., Lazzaro M., Cerioli M., Faccini S., Bonilauri P., Vezzoli F., Lavazza A. & Alborali G.L. (2018). Porcine Epidemic Diarrhoea Virus in Italy: Disease spread and the role of transportation. Transbound Emerg Dis.65(6): 1935-1942.
Khengwa C., Jongchansittoe P., Sedwisai P. & Wiratsudakul A. (2017). A traditional cattle trade network in Tak province, Thailand and its potential in the spread of infectious diseases. Animal Production Science.57(1): 152-160.
Koike N., Mai T.N., Shirai M., Kubo M., Hata K., Marumoto N., Watanabe S., Sasaki Y., Mitoma S., Notsu K., Okabayashi T., Wiratsudakul A., Kabali E., Norimine J. & Sekiguchi S. (2018). Detection of neutralizing antibody against porcine epidemic diarrhea virus in subclinically infected finishing pigs. J Vet Med Sci.80(11): 1782-1786.
Lowe J., Gauger P., Harmon K., Zhang J., Connor J., Yeske P., Loula T., Levis I., Dufrense L. & Main R. (2014). Role of transportation in spread of porcine epidemic diarrhea virus infection, United States. Emerg Infect Dis.20: 872-874.
Mai T.N., Bui T.P., Huynh T.M.L., Sasaki Y., Mitoma S., Daous H.E., Fahkrajang W., Norimine J. & Sekiguchi S. (2020a). Evaluating the Risk Factors for Porcine Epidemic Diarrhea Virus Infection in an Endemic Area of Vietnam. Frontiers in Veterinary Science.7(433).
Mai T.N., Yamazaki W., Bui T.P., Nguyen V.G., Huynh T.M.L., Mitoma S., Daous H.E., Kabali E., Norimine J. & Sekiguchi S. (2020b). A descriptive survey of porcine epidemic diarrhea in pig populations in northern Vietnam. Trop. Anim. Health Prod. 52(6): 3781-3788.
Martínez-López B., Perez A.M. & Sánchez-Vizcaíno J.M. (2009). Social Network Analysis. Review of General Concepts and Use in Preventive Veterinary Medicine. Transbound Emerg Dis.56(4): 109-120.
Perri A.M., Poljak Z., Dewey C., Harding J.C.S. & O'sullivan T.L. (2019). Network analyses using case-control data to describe and characterize the initial 2014 incursion of porcine epidemic diarrhea (PED) in Canadian swine herds. Prev Vet Med.162: 18-28.
Sasaki Y., Alvarez J., Sekiguchi S., Sueyoshi M., Otake S. & Perez A. (2016). Epidemiological factors associated to spread of porcine epidemic diarrhea in Japan. Prev Vet Med.123: 161-167.
Song D., Moon H. & Kang B. (2015). Porcine epidemic diarrhea: a review of current epidemiology and available vaccines. Clin Exp Vaccine Res.4(2): 166-76.