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Photo: Sharon Spier

Sharon Spier- BS, DVM, PhD
Medicine & Epidemiology

3117 Tupper Hall
Davis, CA 95616

+1 530 752 0292


Research Focus

Corynebacterium pseudotuberculosis infections in horses; Hyperkalemic periodic paralysis in horses; Genetic diseases of horses

Specialty Focus

Equine Medicine


1981 BS , Texas A&M University, College Station,
1983 DVM Doctor of Veterinary Medicine, Texas A&M University, College Station,
1989 PhD Comparative Pathology, University of California, Davis,

Honors and Awards

1994 AVMA Council for Research: Excellence in Equine Research Award
Jacob Traum Award for Graduate Work in Infectious Disease
Western States Food Animal Disease Research Conference
Best Graduate Student Presentation
Gamma Sigma Delta Honor Society of Agriculture
Phi Zeta Honor Society
Phi Kappa Phi Honor Society
The National Dean's List
Distinguished Student Award


Diplomate American College of Veterinary Internal Medicine
State Licensure - California
USDA Accredited Veterinarian

Most Recent 10 Publications

  • Link Icon 2014 Baraúna RA, Guimarães LC, Veras AA, de Sá PH, Graças DA, Pinheiro KC, Silva AS, Folador EL, Benevides LJ, Viana MV, Carneiro AR, Schneider MP, Spier SJ, Edman JM, Ramos RT, Azevedo V, Silva A. Genome sequence of Corynebacterium pseudotuberculosis MB20 bv. equi isolated from a pectoral abscess of an Oldenburg horse in California. Genome Announc,
  • Link Icon 2014 Kilcoyne I, Spier SJ, Carter CN, Smith JL, Swinford AK, Cohen ND Frequency of Corynebacterium pseudotuberculosis infection in horses across the United States during a 10-year period J Am Vet Med Assoc,
  • Link Icon 2014 Britz E, Spier SJ, Kass PH, Edman JM, Foley JE The relationship between Corynebacterium pseudotuberculosis biovar equi phenotype with location and extent of lesions in horses. Vet J,
  • Link Icon 2013 Kilcoyne I, Watson JL, Kass PH, Spier SJ Incidence, management and outcome of complications of castration in equids: 324 cases (1998-2008) J Am Vet Med Assoc,
  • Link Icon 2013 Berger J, Spier SJ, Davies R, Gardner IA, Leutenegger CM, Bain MJ Behavioral and physiological responses of weaned foals treated with equine appeasing pheromone: A double-blinded, placebo-controlled, randomized trial J Vet Behav,
  • Link Icon 2013 Jeske JM, Spier SJ, Whitcomb MB, Pusterla N, Gardner IA Use of antibody titers measured via serum synergistic hemolysis inhibition testing to predict internal Corynebacterium pseudotuberculosis infection in horses J Am Vet Med Assoc,
  • Link Icon 2012 Ramos RT, Silva A, Carneiro AR, Pinto AC, Soares Sde C, Santos AR, Almeida SS, Guimarães LC, Aburjaile FF, Barbosa EG, Dorella FA, Rocha FS, Cerdeira LT, Barbosa MS, Tauch A, Edman J, Spier S, Miyoshi A, Schneider MP, Azevedo V. Genome sequence of the Corynebacterium pseudotuberculosis Cp316 strain, isolated from the abscess of a Californian horse. J Bacteriol,
  • Link Icon 2012 Nogradi N, Spier SJ, Toth B, Vaughan B Musculoskeletal Corynebacterium pseudotuberculosis infection in horses: 35 cases (1999-2009) J Am Vet Med Assoc,
  • Link Icon 2012 Lopes T, Silva A, Thiago R, Carneiro A, Dorella FA, Rocha FS, dos Santos AR, Lima AR, Guimarães LC, Barbosa EG, Ribeiro D, Fiaux KK, Diniz CA, de Abreu VA, de Almeida SS, Hassan SS, Ali A, Bakhtiar SM, Aburjaile FF, Pinto AC, Soares Sde C, Pereira Ude P, Schneider MP, Miyoshi A, Edman J, Spier S, Azevedo V. Complete genome sequence of Corynebacterium pseudotuberculosis strain Cp267, isolated from a llama J Bacteriol,
  • Link Icon 2012 Spier S, Toth B, Edman J, Quave A, Habasha F, Garrick M, Byrne B Survival of Corynebacterium pseudotuberculosis biovar equi in soil. Vet Rec,

Most Recent 5 Book Chapters

2014 Spier SJ, Whitcomb MB: Corynebacterium pseudotuberculosis (in miscellaneous bacterial infections), Sellon and Long, (ed), Equine Infectious Diseases, 2nd Ed, St. Louis, MO. 373-9.

2011 Spier SJ: Hyperkalemic periodic paralysis, Ross MW, Dyson SJ, (ed), Diagnosis and Management of Lameness in the Horse, 2nd edition, St Louis, Missouri. 838-9.

2011 Spier SJ, Finno CJ, Valberg SJ: Inherited problems of foals, McKinnon AO, Squires EL, Vaala WE, Varner DD, (ed), Equine Reproduction, West Sussex, UK. 673-80.

2009 Aleman M, Spier SJ: Corynebacterium pseudotuberculosis infection, Smith BP, (ed), Large Animal Internal Medicine, 4th edition, St. Louis, Missouri. 1184-8.

2009 Spier SJ: Corynebacterium pseudotuberculosis infection in horses, Mair TS, Hutchinson RE, (ed), Infectious Diseases of the Horse, Cambridgeshire, UK. 247-52.