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John A. Angelos, DVM, PhD, DACVIM-LAIM

Specialties and Expertise

  • Internal medicine and infectious diseases of food-producing animals; Pathogenesis and prevention of infectious bovine keratoconjunctivitis; Pharmacokinetics of antibiotics in ruminants; Development of improved vaccination/vaccine delivery strategies


  • MS and DVM: Cornell University
  • PhD: University of California, Davis


  • Diplomate, American College of Veterinary Internal Medicine (ACVIM) - Large Animal Internal Medicine

Select Awards, Achievements, and Publications

  • Angelos JA, Clothier KA, Agulto RL, Mandzyuk B, Tryland M. Relatedness of type IV pilin PilA amongst geographically diverse Moraxella bovoculi isolated from cattle with infectious bovine keratoconjunctivitis. J Med Microbiol. 2021;70(2).
  • Angelos JA, Chigerwe M, Edman JM, Hess JF. Systemic and ocular immune responses in cattle following intranasal vaccination with precipitated or partially solubilized recombinant Moraxella bovis cytotoxin adjuvanted with polyacrylic acid. Am J Vet Res. 2016;77(12):1411-1418.
  • Angelos JA, Edman JM, Chigerwe M. Ocular immune responses in steers following intranasal vaccination with recombinant Moraxella bovis cytotoxin adjuvanted with polyacrylic acid. Clin Vaccine Immunol. 2014;21(2):181-187.
  • Angelos JA, Spinks PQ, Ball LM, George LW. Moraxella bovoculi sp. nov., isolated from calves with infectious bovine keratoconjunctivitis. Int J Syst Evol Microbiol. 2007;57(pt 4):789-795.