PMID- 8053150 OWN - NLM STAT- MEDLINE DCOM- 19940908 LR - 20190714 IS - 0042-6822 (Print) IS - 0042-6822 (Linking) VI - 203 IP - 2 DP - 1994 Sep TI - Identification of a new group of bovine viral diarrhea virus strains associated with severe outbreaks and high mortalities. PG - 260-8 AB - New BVDV strains associated with very high mortalities, which killed about 25% of the veal calves in Quebec in 1993, have been isolated. In this study, characterization of the last two-thirds of the 5' untranslated region (5'UTR) of their genome and virus neutralization experiments with polyvalent antisera raised in different animals both demonstrated that these strains formed a distinct group. Despite a difference of about 25% in the 5'UTR sequence with that of the classical strains, these 5'UTRs maintained the same secondary structure albeit with a higher stability. Serological crossreactivity between the classical and new BVDV strains was relatively low and suggest that new strains should also be included to obtain efficient BVDV vaccines. Based upon the distinct characteristics of these new BVDV strains, we propose to divide BVDV into two groups. Group I comprises the classical BVDV isolates including commonly used laboratory and vaccine strains, and group II comprises the newly described BVDV strains and those associated with thrombocytopenia and hemorrhaging. FAU - Pellerin, C AU - Pellerin C AD - Institut Armand-Frappier, Centre de recherche en virologie, Laval, Quebec, Canada. FAU - van den Hurk, J AU - van den Hurk J FAU - Lecomte, J AU - Lecomte J FAU - Tijssen, P AU - Tijssen P LA - eng SI - GENBANK/L32875 SI - GENBANK/L32876 SI - GENBANK/L32877 SI - GENBANK/L32878 SI - GENBANK/L32879 SI - GENBANK/L32880 SI - GENBANK/L32881 SI - GENBANK/L32882 SI - GENBANK/L32883 SI - GENBANK/L32884 SI - GENBANK/L32885 SI - GENBANK/L32886 SI - GENBANK/L32887 SI - GENBANK/L32888 SI - GENBANK/L32889 SI - GENBANK/L32890 SI - GENBANK/L32891 SI - GENBANK/L32892 SI - GENBANK/L32893 SI - GENBANK/L32894 SI - GENBANK/L32895 PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Virology JT - Virology JID - 0110674 RN - 0 (Immune Sera) SB - IM MH - Animals MH - Base Sequence MH - Bovine Virus Diarrhea-Mucosal Disease/epidemiology/*microbiology/mortality MH - Cattle MH - Disease Outbreaks MH - Immune Sera/immunology MH - Molecular Sequence Data MH - Nucleic Acid Conformation MH - Pestivirus/genetics/immunology/*isolation & purification EDAT- 1994/09/01 00:00 MHDA- 1994/09/01 00:01 CRDT- 1994/09/01 00:00 PHST- 1994/09/01 00:00 [pubmed] PHST- 1994/09/01 00:01 [medline] PHST- 1994/09/01 00:00 [entrez] AID - S0042682284714838 [pii] AID - 10.1006/viro.1994.1483 [doi] PST - ppublish SO - Virology. 1994 Sep;203(2):260-8. doi: 10.1006/viro.1994.1483.