Article (Scientific journals)
Persistently Infected Cattle Stabilise Bovine Viral Diarrhea Virus Leading to Herd Specific Strains
Hamers, Claude; Lecomte, Corine; Kulcsar, G. et al.
1998In Veterinary Microbiology, 61 (3), p. 177-82
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Keywords :
Bovine herpesvirus 1 (BHV1); Danish test system; ELISA; gB; gE
Abstract :
[en] Animals persistently infected with BVDV are important in the epizootiology of the Bovine Viral Diarrhea (BVD) because they are a permanent source of contamination within a herd. These animals produce large quantities of virus and have, therefore, been proposed as responsible for generating antigenic variability. However, limited studies have failed to detect antigenic or genetic changes in viruses isolated at different time from persistently infected animals. One hypothesis to account for this stability is that the immunotolerance is accompanied by a selection against antigenic change. The presence of an immunotolerant persistently infected (IPI) animal in a herd would in turn lead to herd specific strains. To verify this hypothesis, we compared 17 BVDV strains isolated from IPI animals from 3 herds of Eastern Belgium. The comparison was based on the sequence of a 389 bp fragment of E2--a gene encoding for a highly variable glycoprotein. Sequences were strongly conserved within herds but were quite different between herds, indicating that BVDV herd-specific strains do exist and are associated with the presence of IPI animals.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Hamers, Claude ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires (DMI) > Immunologie et vaccinologie
Lecomte, Corine ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires (DMI) > Immunologie et vaccinologie
Kulcsar, G.;  State Control Institute for Veterinary Biologicals > Drugs and Feeds
Lambot, Michel ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires (DMI) > Immunologie et vaccinologie
Pastoret, Paul-Pierre ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires (DMI) > Immunologie et vaccinologie
Language :
English
Title :
Persistently Infected Cattle Stabilise Bovine Viral Diarrhea Virus Leading to Herd Specific Strains
Publication date :
31 March 1998
Journal title :
Veterinary Microbiology
ISSN :
0378-1135
eISSN :
1873-2542
Publisher :
Elsevier, Netherlands
Volume :
61
Issue :
3
Pages :
177-82
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 November 2020

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