Kim Seongjoon, Chung Hansung, Lee Hyesook, Myung Donghoon, Choi Kwanghoon, Kim Sukwon, Htet Swe Lynn, Jeong Wooseog, Choe Nonghoon
College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea.
Biotoxtech Co., Ltd., Cheongju 28815, Korea.
J Vet Sci. 2020 May;21(3):e34. doi: 10.4142/jvs.2020.21.e34.
A nationwide outbreak of foot-and-mouth disease (FMD) in South Korea caused massive economic losses in 2010. Since then, the Animal and Plant Quarantine Agency (QIA) has enhanced disinfection systems regarding livestock to prevent horizontal transmission of FMD and Avian influenza (AI). Although the amount of disinfectant used continues to increase, cases of FMD and AI have been occurring annually in Korea, except 2012 and 2013.
This study measured the concentration of the disinfectant to determine why it failed to remove the horizontal transmission despite increased disinfectant use.
Surveys were conducted from February to May 2017, collecting 348 samples from disinfection systems. The samples were analyzed using the Standards of Animal Health Products analysis methods from QIA.
Twenty-three facilities used inappropriate or non-approved disinfectants. Nearly all sampled livestock farms and facilities-93.9%-did not properly adjust the disinfectant concentration. The percentage using low concentrations, or where no effective substance was detected, was 46.9%. Furthermore, 13 samples from the official disinfection station did not use effective disinfectant, and-among 72 samples from the disinfection station-88.89% were considered inappropriate concentration, according to the foot-and-mouth disease virus guidelines; considering the AIV guideline, 73.61% were inappropriate concentrations. Inappropriate concentration samples on automatic (90.00%) and semi-automatic (90.90%) disinfection systems showed no significant difference from manual methods (88.24%). Despite this study being conducted during the crisis level, most disinfectants were used inappropriately.
This may partially explain why horizontal transmission of FMD and AI cannot be effectively prevented despite extensive disinfectant use.
2010年韩国全国范围内爆发口蹄疫，造成了巨大的经济损失。自那时起，动植物检疫局（QIA）加强了针对家畜的消毒系统，以防止口蹄疫和禽流感（AI）的横向传播。尽管消毒剂的使用量持续增加，但除了2012年和2013年外，韩国每年仍有口蹄疫和禽流感病例发生。
本研究测量了消毒剂的浓度，以确定尽管消毒剂使用量增加，但为何仍无法消除横向传播。
于2017年2月至5月进行调查，从消毒系统中收集了348个样本。使用QIA的动物卫生产品分析方法标准对样本进行分析。
23个设施使用了不合适或未经批准的消毒剂。几乎所有抽样的畜牧场和设施（93.9%）都没有正确调整消毒剂浓度。使用低浓度或未检测到有效物质的比例为46.9%。此外，官方消毒站的13个样本未使用有效的消毒剂，根据口蹄疫病毒指南，在消毒站的72个样本中，88.89%被认为浓度不合适；根据禽流感病毒指南，73.61%的浓度不合适。自动（90.00%）和半自动（90.90%）消毒系统上浓度不合适的样本与手动方法（88.24%）相比无显著差异。尽管本研究是在危机级别期间进行的，但大多数消毒剂的使用仍不恰当。
这可能部分解释了为什么尽管大量使用消毒剂，口蹄疫和禽流感的横向传播仍无法得到有效预防。
