Journal
VETERINARY MICROBIOLOGY
Volume 77, Issue 1-2, Pages 59-70Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0378-1135(00)00260-1
Keywords
classical swine fever; epidemiology; wild boar; disease control; genetic typing
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Epizootiological studies based on genetic typing were performed using 14 isolates from outbreaks of classical swine fever (CSF) in domestic pigs and wild boar in the Czech Republic which occurred between 1991 and 1998. They were compared with Austrian, Slovakian, Hungarian, Polish and German isolates. The aim of this study was to characterise the CSF virus isolates and find out the possible relationships between the outbreaks in domestic pigs and wild boar, and to map the spread of the virus in the Czech Republic. For this, fragments of the 5' nontranslated region (5' NTR) and of the E2 glycoprotein gene were sequenced and used for genetic typing. The analysis of both fragments of the genome showed that the Czech isolates belong to two CSF subgroups within group 2, namely to subgroups 2.2 and 2.3. A close relation was found with Austrian isolates from 1992 and 1994, belonging to subgroup 2.2. The isolates in subgroup 2.3 formed a very homogenous group, although they originated from different regions of the country. They seem identical to two Slovakian isolates from 1998, and differed from Hungarian isolates from 1992. Epizootiological links became evident when the epidemiological data were compared. (C) 2000 Elsevier Science B.V. All rights reserved.
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