e-ISSN 1828-1427 |
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Rivista trimestrale di Sanità
Pubblica Veterinaria edita dall'Istituto Zooprofilattico Sperimentale
dell'Abruzzo e del Molise ‘G. Caporale’
A quarterly journal devoted to veterinary public health, veterinary science and medicine published by the Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise ‘G. Caporale’ in Teramo, Italy |
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ISSUES ONLINE
| 2004
- Volume 40 (3),
July-September |
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| I.A. Lager, S. Duffy, J. Miquet, A. Vagnozzi,
C. Gorchs, M. Draghi, B. Cetrà, C. Soni, C. Hamblin,
S. Maan, A.R. Samuel, P.P.C. Mertens, M. Ronderos & V. Ramirez |
| Incidence and isolation of bluetongue virus infection
in cattle of the Santo Tomé Department, Corrientes Province, Argentina |
141-144 |
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Summary
Sentinel herds were monitored for the detection of bluetongue (BT)-specific antibodies and virus over two periods, namely: June 1999 to August 2000 and September 2000 to April 2001. Herds were located in Santo Tomé (Herds 1 and 2) where BTV activity was known to occur. From June 1999 to August 2000, the cumulative incidence (CI) of bluetongue virus (BTV) infection was 0% and 35% in Herds 1 and 2, respectively. In the second period, the CI of BTV infection was 10% and 97% in Herds 1 and 2, respectively. The virus was isolated from red blood cells of animals that seroconverted and was identified as serotype 4. Averages of the monthly maximal temperatures were always above 19°C. However, averages of the monthly median temperatures were below 19°C and averages of the monthly minimal temperatures were below 15°C from May 2000 to August 2000. There was no viral activity detected at that time. Culicoides insignis was identified as the predominant potential vector species (99%) trapped near sentinel herds. Although clinical disease has never been reported in Argentina, viral activity was detected and the virus has been isolated in sentinel herds.
Keywords
Argentina, Bluetongue virus, Culicoides, Infection, Disease, Serotypes.
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