• Title/Summary/Keyword: Korean foot-and-mouth-disease

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A study on the spread of the foot-and-mouth disease in Korea in 2010/2011 (2010/2011년도 한국 발생 구제역 확산에 관한 연구)

  • Hwang, Jihyun;Oh, Changhyuck
    • Journal of the Korean Data and Information Science Society
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    • v.25 no.2
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    • pp.271-280
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    • 2014
  • Foot-and-mouth Disease (FMD) is a highly infectious and fatal viral livestock disease that affects cloven-hoofed animals domestic and wild and the FMD outbreak in Korea in 2010/2011 was a disastrous incident for the country and the economy. Thus, efforts at the national level are put to prevent foot-and-mouth disease and to reduce the damage in the case of outbreak. As one of these efforts, it is useful to study the spread of the disease by using probabilistic model. In fact, after the FMD epidemic in the UK occurred in 2001, many studies have been carried on the spread of the disease using a variety of stochastic models as an effort to prepare future outbreak of FMD. However, for the FMD outbreak in Korea occurred in 2010/2011, there are few study by utilizing probabilistic model. This paper assumes a stochastic spatial-temporal susceptible-infectious-removed (SIR) epidemic model for the 2010/2011 FMD outbreak to understand spread of the disease. Since data on infections of FMD disease during 2010/2011 outbreak of Aniaml and Plant Quarantine Agency and on the livestock farms from the nationwide census in 2011 of Statistics Korea do not have detail informations on address or missing values, we generate detail information on address by randomly allocating farms within corresponding Si/Gun area. The kernel function is estimated using the infection data and by using simulations, the susceptibility and transmission of the spatial-temporal stochastic SIR models are determined.

In vivo characterization and transmission of Korean foot-and-mouth disease virus(FMDV) (국내 발생 구제역 바이러스(foot-and-mouth disease virus)의 특성과 전파력에 관한 연구)

  • Sur, Jung-hyang;Shin, Jin-ho;Loubroth, Juan;Yeh, Max;Ku, Bok-kyung;Choi, Kang-seuk;Kweon, Byung-joon;Sohn, Hyun-joo;Ko, Young-joon;Choi, Cheong-up;Kwon, Chang-hee;Kim, Jong-yeom;An, Soo-hwan;Kim, Ki-seuk;Moon, Oun-kyung;Kim, Jae-hoon;Choi, Sang-ho;Lee, Hong-gil;Hwang, Eui-kyung;Kim, Soon-bok;Kang, Shin-seuk;Kim, Ok-kyung
    • Korean Journal of Veterinary Research
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    • v.40 no.4
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    • pp.719-727
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    • 2000
  • A study was conducted to determine the susceptibility of swine to Korean foot-and-mouth disease virus (FMDV; subtype O, isolated from Chungju province) in April, 2ooo. One holstein cow was inoculated intradermolingually with suspension of homogenized tissue from a Korean native cow naturally infected with Korean FMDY. Infected cow was housed with one susceptible cow and one susceptible pig (contact sentinels). Four additional susceptible pigs were housed in the same room but caged separately (non-contacted sentinels). The contacted pig and cow as well as non-contact pigs developed typical clinical signs after 2, 3, and 7 days post exposure, respectively. We compared neutralizing antibody from the animals to FMDV $O_1$ Lombardy, O Taiwan, $O_1$ Campos, and $O_1$ Manisa after 0, 4, 7, 10, 14, 21, 28 days post challenge and post-exposure. The highest viral neutralization titer could be interpreted that serotype O Korea (Chungju isolate) is antigenically more related to $O_1$ Manisa. In addition, immunohistochemistry was used to further characterize Korean FMDV from tissues of infected pigs. Korean FMDV antigen was observed in the tongue, hoof, esophagus, and tonsil tissues of sentinel pigs. These findings suggest that Korean FMD virus isolated from cattle can be rapidly transmitted to pigs both directly and indirectly contrast field observation in which only cattle were clinically ill.

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Exploring preventive factors against insufficient antibody positivity rate for foot-and-mouth disease in pig farms in South Korea: a preliminary ecological study

  • Dongwoon Han;Byeongwoo Ahn;Kyung-Duk Min
    • Journal of Veterinary Science
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    • v.25 no.1
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    • pp.13.1-13.9
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    • 2024
  • Background: Foot-and-mouth disease (FMD) is a highly contagious viral disease in livestock that has tremendous economic impact nationally. After multiple FMD outbreaks, the South Korean government implemented a vaccination policy for efficient disease control. However, during active surveillance by quarantine authorities, pig farms have reported an insufficient antibody positivity rate to FMD. Objective: In this study, the spatial and temporal trends of insufficiency among pig farms were analyzed, and the effect of the number of government veterinary officers was explored as a potential preventive factor. Methods: Various data were acquired, including national-level surveillance data for antibody insufficiency from the Korea Animal Health Integrated System, the number of veterinary officers, and the number of local pig farms. Temporal and geographical descriptive analyses were conducted to overview spatial and temporal trends. Additionally, logistic regression models were employed to investigate the association between the number of officers per pig farm with antibody insufficiency. Spatial cluster analysis was conducted to detect spatial clusters. Results: The results showed that the incidence of insufficiency tended to decrease in recent years (odds ratio [OR], 0.803; 95% confidence interval [95% CIs], 0.721-0.893), and regions with a higher density of governmental veterinary officers (OR, 0.942; 95% CIs, 0.918-0.965) were associated with a lower incidence. Conclusions: This study implies that previously conducted national interventions would be effective, and the quality of government-provided veterinary care could play an important role in addressing the insufficient positivity rate of antibodies.

Effects of dietary acetaminophen and vitamin C supplement on serum cortisol and tumor necrosis factor-alpha concentrations in pigs vaccinated with foot-and-mouth disease vaccine

  • Cha, Chun-Nam;Lee, Beom-Jun;Park, Eun-Kee;Yoo, Chang-Yeol;Kim, Suk;Lee, Hu-Jang
    • Korean Journal of Veterinary Research
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    • v.57 no.3
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    • pp.197-200
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    • 2017
  • This study evaluated the effect of a combination of acetaminophen and vitamin C (CAV) on reducing serum cortisol and tumor necrosis $factor-{\alpha}$ ($TNF-{\alpha}$) concentrations in piglets vaccinated with foot-and-mouth disease (FMD) vaccine. Piglets were vaccinated with FMD vaccine and treated with CAV at concentrations of 0.0, 0.5, 1.0, and 2.0 kg/ton feed (P-CON, AD-1, AD-2, and AD-3, groups, respectively) for 5 days post-vaccination. Cortisol and $TNF-{\alpha}$ levels at 5 days post-treatment in the AD-1-3 groups were significantly lower than that in the P-CON group (p < 0.05). There were no significant differences between AD-2 and AD-3 groups and non-vaccinated, non-CAV-treated piglets.

Technology and Policy Measures for Landfill Sites of Foot-and-Mouth Disease in Korea (구제역 매몰지에 대한 기술 및 정책적 대응 방안)

  • Ko, Chang-Ryong;Seol, Sung-Soo
    • Journal of Korea Technology Innovation Society
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    • v.16 no.4
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    • pp.978-1005
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    • 2013
  • In 2010-11 outbreak of foot-and-mouth disease, around 3.5 million livestock were slaughtered and buried at more than 4,500 landfill sites. These landfill sites have been managed according to the Domestic Animal Infectious Disease Control Law. However, the control will be removed from December 2013 since the control period is 3 years. That means the sites will be reused without any interference. In this situation, if the buried livestock has not fully resolved and opened to surface, many dangerous happening is expected. This study explores technology and policy measures to meet the expected problems after December 2013. We will suggest the structure of technology for management of landfill sites based on the needs of the sites, and we will analysis Korean patents under this classification. This is the first try in the world because Korean style of landfill is unique. Based on analysis, we will suggest policy recommendations.

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Conditions for the disinfectant efficacy test under subzero temperatures

  • Chae, Won-Seok;Jeong, Wooseog;Lee, Hu-Jang
    • Korean Journal of Veterinary Research
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    • v.59 no.1
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    • pp.43-45
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    • 2019
  • To establish appropriate conditions for a disinfectant efficacy test at subzero temperatures, this study examined mixtures of frozen foot-and-mouth disease virus or avian influenza virus solutions and disinfectant diluents at $-5^{\circ}C$ and monitored temperature and freezing status of an anti-freezing diluent (AFD, 15% ethanol + 30% propylene glycol + 55% distilled water) over time at various subzero temperatures. Viral solutions and disinfectant diluents froze before the mixtures reached $-5^{\circ}C$, whereas the AFD was not frozen at $-30^{\circ}C$. The times taken for the AFD to reach -10, -20, -30, and $-40^{\circ}C$ from room temperature were 36, 39, 45, and 48 min, respectively.

Needs of Biosecurity and Protocols for the Environmental Management of Carcasses Burial (가축매몰지 환경관리에 있어 차단방역의 필요 및 절차)

  • Cho, Ho-Seong;Kim, Geonha
    • Journal of Korean Society on Water Environment
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    • v.28 no.2
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    • pp.305-312
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    • 2012
  • Avian influenza (AI) and foot and mouth disease (FMD) are two main contagious pathogenic viruses causing massive mortality burial, as burial is a primary measure to quaranteen the causative viruse(s). Biosecurity is a set of preventive measures designed to reduce the risk of propagation of infectious diseases. Main objectives of this paper were to discuss the needs of biosecurity and develop protocol outlines for environmental management of burial sites. Pathological characteristics of contagious viruses should be considered during environmental management practices. Current practice prescribes to minimize the potential for on-farm pollution and the spread of infectious diseases, policy makers should understand robust knowledge regarding biosecurity to make informed decisions on future legislation.