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  • Heike Köhler, Heike Gyra, +7 authors R. G. Hess
  • Biology, Medicine
  • Journal of veterinary medicine. B, Infectious…
  • 2001 (First Published: 14 April 2001)
  • After immunization of four calves with a live modified Mycobacterium paratuberculosis vaccine the course of the humoral and cell mediated immune reactions was studied during a 2-year clinicalContinue Reading
  • Karl Zimmer, Klaus Dräger, W. Klawonn, R. G. Hess
  • Biology, Medicine
  • Zentralblatt fur Veterinarmedizin. Reihe B…
  • 1999 (First Published: 1 March 1999)
  • In the present study, 132 selected faecal samples from clinically affected and subclinically infected cattle from dairy herds known to be affected by Johne's disease were investigated for theContinue Reading
  • W. Klawonn, Klaus Cussler, +4 authors R. G. Hess
  • Medicine
  • DTW. Deutsche tierarztliche Wochenschrift
  • 2002 (First Published: 1 December 2002)
  • Three chronically paratuberculosis infected herds were tested for six years twice a year (intradermal Johnin test, antibody ELISA (IDEXX Corp.), microbial culture) according to a sanitary program.Continue Reading
  • Jorge Arturo Fernández-Silva, Amir Abdulmawjood, Ömer Akineden, Klaus Dräger, W. Klawonn, Michael Bülte
  • Biology, Medicine
  • Research in veterinary science
  • 2012 (First Published: 1 October 2012)
  • Mycobacterium avium subsp. paratuberculosis (MAP) is the causal agent of Johne's disease in dairy cattle. Genotyping of MAP is useful to gain a better understanding of the origin of infection, toContinue Reading
  • W. Klawonn, Esra Einax, R Pützschel, Mandy Schmidt, Karsten Donat
  • Medicine
  • Epidemiology and infection
  • 2016 (First Published: 1 August 2016)
  • Environmental samples are considered to be a cost-effective method of identifying Mycobacterium avium subsp. paratuberculosis (MAP)-positive dairy herds, but evidence for beef cow-calf herds is weak.Continue Reading
  • Lutz Geue, Heike Köhler, W. Klawonn, Klaus Dräger, R. G. Hess, Franz Josef Conraths
  • Medicine
  • Berliner und Munchener tierarztliche…
  • 2007
  • Paratuberculosis or Johne's Disease, caused by Mycobacterium avium subspecies paratuberculosis (MAP), is a notifiable disease in Germany which produces enormous economical losses in dairy farms. AtContinue Reading