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Infection with bluetongue virus serotype 8 in Sweden in 2008
  1. S. Sternberg Lewerin, DVM, PhD1,
  2. G. Hallgren, DVM1,
  3. M. Elvander, DVM, PhD1,
  4. L. Treiberg Berndtsson, DVM2,
  5. J. Chirico, PhD2 and
  6. K. Mieziewska, DVM, PhD3
  1. 1 Department of Disease Control and Epidemiology
  2. 2 Department of Virology, Immunobiology and Parasitology,National Veterinary Institute, 75 189 Uppsala, Sweden
  3. 3 Division for Ruminants and Pigs, Department for Animal Welfare and Health, Swedish Board of Agriculture, 551 82 Jönköping, Sweden
  1. E-mail for correspondence: susanna.lewerin{at}sva.se

Abstract

On September 6, 2008, bluetongue was detected for the first time in Sweden. Intensified active surveillance in cattle and vector surveillance, prompted by the situation in northern Europe, preceded the detection. A vaccination campaign and intensive surveillance activities were initiated nationally, but with a focus on the southern part of the country. Measures included both active and passive surveillance by serology and PCR in ruminants, along with vector surveillance. The investigations revealed that the infection occurred over a large area of southern Sweden during September and October 2008, despite comparatively low vector activity, an apparently low viral load and no clinical disease. Transplacental infection was detected in one case.

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