Thomas Besser


Affiliation: Washington State University
Country: USA


  1. Besser T, Shaikh N, Holt N, Tarr P, Konkel M, Malik Kale P, et al. Greater diversity of Shiga toxin-encoding bacteriophage insertion sites among Escherichia coli O157:H7 isolates from cattle than in those from humans. Appl Environ Microbiol. 2007;73:671-9 pubmed
    ..coli O157:H7 genotypes. ..
  2. Sheng H, Shringi S, Baker K, Minnich S, Hovde C, Besser T. Standardized Escherichia coli O157:H7 Exposure Studies in Cattle Provide Evidence that Bovine Factors Do Not Drive Increased Summertime Colonization. Appl Environ Microbiol. 2016;82:964-71 pubmed publisher
    ..Instead, the data support the hypothesis that the increased summertime STEC O157 colonization results from increased seasonal oral exposure to this pathogen. ..
  3. Besser T, Cassirer E, Potter K, VanderSchalie J, Fischer A, Knowles D, et al. Association of Mycoplasma ovipneumoniae infection with population-limiting respiratory disease in free-ranging Rocky Mountain bighorn sheep (Ovis canadensis canadensis). J Clin Microbiol. 2008;46:423-30 pubmed
    ..001]). M. ovipneumoniae is strongly associated with bronchopneumonia in free-ranging bighorn sheep and is a candidate primary etiologic agent for this disease...
  4. request reprint
    Besser T, Cassirer E, Yamada C, Potter K, Herndon C, Foreyt W, et al. Survival of bighorn sheep (Ovis canadensis) commingled with domestic sheep (Ovis aries) in the absence of Mycoplasma ovipneumoniae. J Wildl Dis. 2012;48:168-72 pubmed
    ..The absence of epizootic respiratory disease in this experiment supports the hypothesized role of M. ovipneumoniae as a key pathogen of epizootic pneumonia in bighorn sheep commingled with domestic sheep...
  5. Besser T, Highland M, Baker K, Cassirer E, Anderson N, Ramsey J, et al. Causes of pneumonia epizootics among bighorn sheep, Western United States, 2008-2010. Emerg Infect Dis. 2012;18:406-14 pubmed publisher
    ..These data provide evidence that M. ovipneumoniae plays a primary role in the etiology of epizootic pneumonia of bighorn sheep...
  6. Besser T, Frances Cassirer E, Highland M, Wolff P, Justice Allen A, Mansfield K, et al. Bighorn sheep pneumonia: sorting out the cause of a polymicrobial disease. Prev Vet Med. 2013;108:85-93 pubmed publisher
    ..It may also be possible to develop M. ovipneumoniae vaccines or other management strategies that could reduce the impact of this devastating disease in bighorn sheep...