JOURNEY OF AFRICAN SWINE FEVER VIRUS IN EASTERN EU STATES
Abstract
INTRODUCTION: In 2007, African swine fever virus (ASFv) broken its well-known boundaries. This was the reference year for the first report of African swine fever (ASF) in Georgia. Subsequently, the virus reached pigs and boars in Armenia and Russia. From the Caucasus area, ASFv jumped in all directions, between the Black Sea and the Caspian Sea, in relation to the density of backyard pigs and their trade. In the next ten years there have been notifications and registrations of ASFv outbreaks in Russia, Azerbaijan, Ukraine, Belarus, Lithuania, Poland, Estonia, Latvia, Moldova and the Czech Republic. Romania faced the first ASFv outbreak at the end of July 2017, in backyard pigs." in stead "density of backyard pigs and their trade. In the next ten years there have been notifications and registrations of ASFv outbreaks in Russia, Azerbaijan, Ukraine, Belarus, Lithuania, Poland, Estonia, Latvia, Moldova and the Czech Republic. Romania faced the first ASFv outbreak at the end of July 2017, in backyard pigs.
OBJECTIVES: The aim of study is to analyse the ways ASFv spread from and into different regions recorded by Eastern European states.
METHODS: The immediate notifications on ASFv to the World Organisation for Animal Health (OIE) were analysed from the Eastern-European states between 2007 and 2017. The analysis took into consideration the first occurrence of the disease under scrutiny in the country and the follow-up reports, in relation with the geospatial distribution of the outbreaks.
RESULTS: The main route of ASFv introduction into local pig populations indicated by the Member States of the European Union was the trans-boundary circulation of boars. However, the spread of ASFv through both, wild and domestic pigs and also by the human alimentary customs/traditions in the affected areas shouldn’t be ignored. Three cycles of ASFv transmission have been identified and described by the epidemiologists: the domestic cycle, the sylvatic cycle and the tick-pig cycle.
CONCLUSION: None of the ways to disseminate the ASFv should be excluded, and the origin of the first outbreaks remains unknown or inconclusive in Eastern EU states.
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