PORCINE REPRODUCTIVE & RESPIRATORY SYNDROME - BELARUS: NEW HIGHLY PATHOGENIC STRAIN

Phumonic Plague in Ukraine; http://www.youtube.com/watch?v=gN9XFS8x6KE&feature=player_embedded
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A ProMED-mail post



ProMED-mail is a program of the

International Society for Infectious Diseases





Date: Fri, 15 Oct 2010

Source: Agrodigital.com [In Spanish, trans, Corr.SB, edited]







A new highly pathogenic strain of virus PRRS has been detected

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Researchers at the University of Ghent (Belgium), led by Dr Hans Nauwynck,

have discovered a new strain of the porcine reproductive and respiratory

syndrome virus (PRRSV).



PRRSV is divided into genotypes of Europe and of North America. PRRSV

isolates from Eastern Europe belong to the European genotype, but are

different subtypes.



The researchers found, in a pig farm in Belarus, a new PRRSV which they

named "Lena". Analyses revealed that Lena is a new subtype 3 in Eastern

Europe, highly pathogenic and causes severe clinical symptoms. It is

different from European subtype 1 Lelystad and North American US5 strains.



--

communicated by:

ProMED-mail





[The original paper, published on 4 Jun 2010 in BMC Veterinary Research (an

open access, peer-reviewed journal, UK) is available online at

(ref 1). The paper includes,

among other data, a description of the severe clinical signs, including

significant mortality, in pigs experimentally infected by the "Lena"

strain, compared with other Type I (European) PRRSV.



Most ProMED-mail's postings addressing PRRSV, so far, were related to the

major epizootic (popularly named "blue-ear disease") in China and Vietnam

since 2006. This was caused by a Type II virus, related to North American

lineages. A list of available vaccines against PRRSV is to be found at

.



1. Karniychuk UU, Geldhof M, Vanhee M, Van Doorsselaere J, Saveleva TA,

Nauwynck HJ. (). Pathogenesis and antigenic characterization of a new East

European subtype 3 porcine reproductive and respiratory syndrome virus

isolate. BMC Vet. Res. 2010; 6: 30.





Further reading:

MP Murtaugh, T Stadejek, JE Abrahante, TT Lam, FC Leung. The ever-expanding

diversity of porcine reproductive and respiratory syndrome virus. Virus

Res. 2010; Aug 27 [Epub ahead of print]. Available online (purchase

required) at:

.-

Mod.AS]



[see also:

2009

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Porcine reprod. & resp. syndrome - China (03): virulence 20091025.3694

2007

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Porcine reprod. & resp. syndrome - China (02) 20070514.1533

Porcine reproductive & respiratory syndrome - Viet Nam (04): OIE 20070422.1316

2003

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Multisystemic wasting syndrome, swine - NZ: suspected 20031002.2480

2001

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Multisystemic wasting syndrome, swine - UK (02) 20011031.2688

1999

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PRRS virus, pigs - Ireland 19990219.0217]



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