Occurrences of Ibaraki disease in two successive years; possibly caused by virus overwintering

Successively in 1997 and 1998, the Ibaraki disease affected 9 head of cattle on 9 dairy farms in Fukuoka Prefecture. Although the diseased cattle had received no vaccine against the Ibaraki disease in 1998, the anti-Ibaraki virus (IBAV) antibody was detected in all of them. IBAV was isolated from wa...

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Bibliographic Details
Published inJournal of the Japan Veterinary Medical Association Vol. 53; no. 6; pp. 372 - 376
Main Authors Uchinuno, Y. (Fukuoka-ken. Government Office (Japan)), Ishibashi, K, Yokoyama, A, Kawanabe, M, Takagi, E
Format Journal Article
LanguageEnglish
Japanese
Published Japan Veterinary Medical Association 20.06.2000
Subjects
abnormal parturition
cow
DAIRY COWS
HIBERNACION
HIBERNATION
Ibaraki disease
Ibaraki virus
overwinter
PARTO
PARTURITION
REOVIRIDAE
VACAS LECHERAS
VACHE LAITIERE
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Summary:Successively in 1997 and 1998, the Ibaraki disease affected 9 head of cattle on 9 dairy farms in Fukuoka Prefecture. Although the diseased cattle had received no vaccine against the Ibaraki disease in 1998, the anti-Ibaraki virus (IBAV) antibody was detected in all of them. IBAV was isolated from washed red blood cells of one affected animal. Six sera from abnormally delivered fetuses and 3 precolostral sera from weak calves contained the anti-IBAV antibody. The cross-neutralization test and PCR-RFLP identified isolates obtained in 1997-98as the same type of IBAV. These findings plus the limiting of Ibaraki disease incidences to Fukuoka Prefecture, Kyushu, suggest that the virus, widespread in 1997, overwintered within the prefecture to cause the same epidemic disease in 1998.
Bibliography:L70
L73
2000005818
ISSN:0446-6454
2186-0211
DOI:10.12935/jvma1951.53.372