Article Text

PDF
Epidemiology and control of an outbreak of classical swine fever in wild boar in Switzerland
  1. M. Schnyder, MedVet1,
  2. T. Vanzetti, DrMedVet1,
  3. K. D. C. Stärk, DrMedVet,PhD2,
  4. W. Schleiss, DrMedVet2,
  5. M. D. Salman, DVM,MPVM, PhD3,
  6. B. Thur, DrMedVet4 and
  7. C. Griot, DrMedVet4
  1. 1 Cantonal Veterinary Office, Via Dogma 16, CH-6500 Bellinzona, Switzerland
  2. 2 Swiss Federal Veterinary Office, CH-3003 Bern, Switzerland
  3. 3 College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523- 1676, USA
  4. 4 Institute of Virology and Immunoprophylaxis, CH-3147 Mittelhausern, Switzerland
  1. Institute of Virology and Immunoprophylaxis, CH-3147 Mittelhausern, Switzerland

Abstract

An outbreak of classical swine fever in wild boar in the southern part of Switzerland (Canton of Ticino) was investigated after the implementation of control measures in a defined infected area (the risk zone), and in a surrounding surveillance zone (the non-risk zone). After the disease had been detected, hunting was not allowed in the risk zone for over six months, during which the disease was left to run its course, but hunting was continued in the non-risk zone for one month. After seven months, a hunting strategy targeted at young animals was implemented in both zones. Between May 1998 and January 2000,1294 wild boar were shot or found dead, and diagnostic and biological data were collected and analysed. Only one animal from the nonrisk zone was found to be seropositive for antibodies to the virus, whereas 179 of 528 wild boar from the risk zone were virus positive and 162 were seropositive. The proportion of virus-positive animals decreased from 62.7 per cent to zero over one year. During the first hunting season, seropositive animals were found in all age groups, but 12 months later only animals more than one year old had antibodies against the virus.

    Statistics from Altmetric.com

      Request permissions

      If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.