African swine fever recovery in China

Gong, Lang; Xu, Runda; Wang, Zengjie; Deng, Qiwei; Wang, Heng; Zhang, Guihong

doi:10.1002/vms3.299

Cited by 10 publications

(12 citation statements)

References 11 publications

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“…Our study showed that sodium hypochlorite was more effective in breaking down DNA of ASFV making sodium hypochlorite more favorable to use by avoiding confusing positive DNA with infectious ASFV particles especially when evaluating the cleaning and disinfection outcome. This is also consistent with ndings of a recent report that sodium hypochlorite and chlorine work well in damaging ASFV DNA 1 . These characteristics of ASFV constitute the scienti c foundation or our method and vice versa, our results supported these ndings.…”

Section: Discussionsupporting

confidence: 93%

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Assessment and Appliction of Whole-Herd-Sampling, qPCR-Based-Testing, and Precision-Removal Method in Eliminating ASFv in Four Large Swine Herds in China

et al. 2021

Preprint

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Since the first report of ASFV in China in 2018, conventional whole herd depopulation method to control ASF has proved unwieldly because of high production intensity and complex trade network. To provide an alternative to conventional methods, we evaluated the feasibility of implementating an extensive sampling method and qPCR tests to determine the status of ASFV in herds, with a rapid response to identified outbreaks. By assessing and applying these methods without whole herd depopulation, we successfully controlled ASF and eliminated the virus from 4 large swine herds. The time to negative herd was 19, 28, 14, and 1 days in farms 1-4 respectively. Retention rates of pigs of farm 1 to farm 4 was 69.7%, 65%, 99.4% and 99.72% respectively. We anticipated that this innovative method would replace the conventional stamping out one and greatly facilitate the control and eradication of ASFV in China and worldwide.

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Section: Discussionsupporting

confidence: 93%

“…The rst outbreak of ASF in China was reported on 3rd August, 2018 1 . Without vaccine, the only available tool to prevent ASFV is the implementation of strict bio-security measures at regional and farm level.…”

Section: Introductionmentioning

confidence: 99%

Assessment and Appliction of Whole-Herd-Sampling, qPCR-Based-Testing, and Precision-Removal Method in Eliminating ASFv in Four Large Swine Herds in China

et al. 2021

Preprint

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“…In 2019, China’s pork export volume was 210,000 tons, a year-on-year decrease of 36.17%, which has tremendous consequences for international trade. In the face of strong and sustained demand, the available pork supply has subsequently declined, leading to a substantial increase in the price of pork sold on the domestic market, from 12.2 yuan per kg (February 2019) to 36.1 yuan per kg in February 2020 [ 22 ]. The outbreak of ASF caused a considerable loss of pig capacity in China, and the pig industry has suffered a devastating blow.…”

Section: Epidemic Situation Of Asf In Chinamentioning

confidence: 99%

“…The diversification of breeding modes, high feeding density and weak biosafety awareness of practitioners have aggravated the pressure on the prevention and control of ASF in China. Therefore, more attention should be paid to improving animal husbandry and raising biosecurity levels [ 22 , 38 ].…”

Section: Factors Of Asf Prevalence In Chinamentioning

confidence: 99%

Current State of Global African Swine Fever Vaccine Development under the Prevalence and Transmission of ASF in China

Liu

Wang

et al. 2020

Vaccines

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African swine fever (ASF) is a highly lethal contagious disease of swine caused by African swine fever virus (ASFV). At present, it is listed as a notifiable disease reported to the World Organization for Animal Health (OIE) and a class one animal disease ruled by Chinese government. ASF has brought significant economic losses to the pig industry since its outbreak in China in August 2018. In this review, we recapitulated the epidemic situation of ASF in China as of July 2020 and analyzed the influencing factors during its transmission. Since the situation facing the prevention, control, and eradication of ASF in China is not optimistic, safe and effective vaccines are urgently needed. In light of the continuous development of ASF vaccines in the world, the current scenarios and evolving trends of ASF vaccines are emphatically analyzed in the latter part of the review. The latest research outcomes showed that attempts on ASF gene-deleted vaccines and virus-vectored vaccines have proven to provide complete homologous protection with promising efficacy. Moreover, gaps and future research directions of ASF vaccine are also discussed.

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“…Chinese researchers insist that the long-distance transport of live pigs is unavoidable because the pig-producing field is not distributed uniformly throughout China [ 45 ]. Some Asian countries, such as China and Vietnam, have highly complex pig/pork production systems [ 46 ]. Other countries also have complex pig value chains that affect the movement of pigs, the feed-supply system, and shipment to slaughterhouses.…”

Section: Change and Preparation Of Asf Outbreaks For The Futurementioning

confidence: 99%

Control measures to African swine fever outbreak: Active response in South Korea, preparation for the future, and cooperation

2021

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African swine fever (ASF) is one of the most complex infectious swine diseases and the greatest concern to the pig industry owing to its high mortality and no effective vaccines available to prevent the disease. Since the first outbreak of ASF in pig farms, ASF has been identified in 14 pig farms in four cities/counties in South Korea. The outbreak was resolved in a short period because of the immediate control measures and cooperative efforts. This paper reviews the ASF outbreak and the experience of successfully stopping ASF in pig farms in South Korea through active responses to prevent the spread of ASF. In addition, suitable changes to build a sustainable pig production system and collaborative efforts to overcome the dangerous animal disease, such as ASF, are discussed.

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African swine fever recovery in China

Cited by 10 publications

References 11 publications

Assessment and Appliction of Whole-Herd-Sampling, qPCR-Based-Testing, and Precision-Removal Method in Eliminating ASFv in Four Large Swine Herds in China

Assessment and Appliction of Whole-Herd-Sampling, qPCR-Based-Testing, and Precision-Removal Method in Eliminating ASFv in Four Large Swine Herds in China

Current State of Global African Swine Fever Vaccine Development under the Prevalence and Transmission of ASF in China

Control measures to African swine fever outbreak: Active response in South Korea, preparation for the future, and cooperation

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