Is There a Risk for Introducing Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) Through the Legal Importation of Pork?

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• 作者：Megan C. Niederwerder ; Raymond R.R. Rowland
• 关键词：Porcine reproductive and respiratory syndrome virus (PRRSV) ; Transboundary disease ; Pork ; Importation ; Swine
• 刊名：Food and Environmental Virology
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：9
• 期：1
• 页码：1-13
• 全文大小：
• 刊物主题：Virology; Food Science; Chemistry/Food Science, general;
• 出版者：Springer US
• ISSN：1867-0342
• 卷排序：9

文摘

Since the appearance of porcine reproductive and respiratory syndrome virus (PRRSV) in the late 1980s, the virus has become endemic throughout the world, with only the countries of Sweden, Switzerland, Finland, Norway, Australia, and New Zealand historically free of PRRS virus. Biosecurity is maintained largely through restrictions on the importation of pigs and semen. The risk for a PRRSV outbreak via the legal importation of fresh/chilled/frozen pork from PRRSV-positive countries remains controversial. However, examination of the historical record shows that countries retained a PRRSV-negative status during the importation of more than 500,000 tons of fresh/chilled/frozen pork from PRRSV-positive trading partners. This review describes some of the unique properties of PRRSV, including the poor stability of the virus in the environment, the low probability for airborne transmission, and the inability to sustain infections in feral swine, which make PRRSV a poor candidate for disease introduction through the legal importation of pork.