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Journal of Clinical Microbiology, September 2001, p. 3080-3084, Vol. 39, No. 9
Moredun Research Institute, International
Research Centre, Pentlands Science Park,1 and
Department of Veterinary Pathology, Easter Bush Veterinary
Centre, University of Edinburgh,2 Bush Loan,
Midlothian, Scotland EH26 0PZ, United Kingdom
Received 15 March 2001/Returned for modification 14 May
2001/Accepted 17 June 2001
The role of wildlife species in the epidemiology of
paratuberculosis has been the subject of increased research efforts
following the discovery of natural paratuberculosis in free-living
rabbits from farms in east Scotland. This paper describes the
experimental inoculation of young calves with an isolate of
Mycobacterium avium subsp. paratuberculosis
recovered from a free-living rabbit. After a 6-month incubation period,
all eight calves inoculated with the rabbit isolate had developed
histopathological and/or microbiological evidence of M. avium subsp. paratuberculosis infection. Similar results were obtained from a group of calves infected with a bovine isolate of M. avium subsp. paratuberculosis.
The virulence of the rabbit isolate for calves demonstrated in this
study suggests that rabbits are capable of passing paratuberculosis to
domestic ruminants and that wildlife reservoirs of M. avium
subsp. paratuberculosis should therefore be considered when
formulating control plans for the disease.
0095-1137/01/$04.00+0 DOI: 10.1128/JCM.39.9.3080-3084.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Experimental Paratuberculosis in Calves following
Inoculation with a Rabbit Isolate of Mycobacterium avium
subsp. paratuberculosis

*
Corresponding author. Mailing address: Moredun Research
Institute, International Research Centre, Pentlands Science Park, Bush
Loan, Midlothian EH26 0PZ, United Kingdom. Phone: 44 131 445 5111. Fax:
44 131 445 6111. E-mail: sharm{at}mri.sari.ac.uk.
Present address: Microbiology and Immunology, College of Veterinary
Medicine, Cornell University, Ithaca, NY 14853.
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