Science and Technology Production
Congress
Authorship
Date
2007
Publishing House and Editing Place
Buenos Aires
ISSN
0325-7541
Summary
Information provided by the agent in
SIGEVA
Antibodies againts Cache Valley virus (CVV), Bunyamwera complex, Bunyamera serogrup, Orthobunyavirus genus, Bunyaviridae family, have been detected in sheep, goats, cows, horses and humans from Alaska to Argentina. In the USA, an association between CVV infections and congenital malformations ( various musculosketel and central nervous system defects) was described in sheep, and later experimentally reproduced in sheep and cattle. Recent serologic studies suggest the viruses of the Bunyamwera s...
Antibodies againts Cache Valley virus (CVV), Bunyamwera complex, Bunyamera serogrup, Orthobunyavirus genus, Bunyaviridae family, have been detected in sheep, goats, cows, horses and humans from Alaska to Argentina. In the USA, an association between CVV infections and congenital malformations ( various musculosketel and central nervous system defects) was described in sheep, and later experimentally reproduced in sheep and cattle. Recent serologic studies suggest the viruses of the Bunyamwera serogrup may also be the etiologic agents of congenital defects of the central nervous systen in humans.There was no a previously record of infections in birds by these viruses in Argentina as in the rest of America.A serologycal survey was carried out to detect infection against CVV in birds from Cordoba city, central Argentina. 170 sera obtained from birds, captured between January and May 2004, were analizad for neutralizing antibodies (NT) by plaque reduction test in Vero cell. The viral strain used was Cba Ar 426. Since cross reaction with Kairi virus ( KRIV), Kairi complex, ( strains BeAr 8226) was previously obserbed, positive sera for CVV were also tested against KRIV. La prevalence of NT antibodies against CVV in birds was 6.47% ( 11/170). The infected birds were: Zenaida auriculata ( Eared dove), Columbina picui ( Picui ground-dove), Machetornis rixosus ( cattle tyrant), Tyrannus savan ( Fork-tailed flycatcher) , Passer doesticus ( House sparrow), Carduelis magellanica ( Hooded siskin), Molothrus bonaerensis ( Shiny cowbirds) Tusdus amaurochalinus ( Creamy-bellied thrus), Pseudoseisura lophotes ( Brown cacholote). All the sera were negative for KRIV. According to these results, birds are also susceptible to CVV infections. Furthemore, the prevalence of antibodies found was sismilar to the detect in inhabitants of Cordoba city. This is the firts report of infection by CVV in birds for Argentina, as well as for the rest of America.
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Key Words
CórdobaVirus Cache ValleyAves