Calvin M. Johnson, DVM, PhD, DACVP


Calvin M. Johnson Photo


Vet Med Administration

Auburn University
College of Veterinary Medicine
1130 Wire Road
Auburn, AL 36849



PhD, North Carolina State University, Pathology and Biotechnology, 1992
DVM, Auburn University, 1986



Dr. Calvin M. Johnson is Dean of the College of Veterinary Medicine at Auburn University, where he advances the college’s academic mission in instruction, research, outreach, and professional service. Dr. Johnson is a 1986 graduate (DVM) of Auburn University and in 1992 earned the PhD in pathology and biotechnology from North Carolina State University. He achieved board certification in anatomic pathology by the American College of Veterinary Pathologists (ACVP) in 1993. Dr. Johnson served on the faculty of the University of Florida for 11 years before moving to Auburn. He served for six years as department head of Pathobiology and one year as acting dean before being named dean of the College of Veterinary Medicine at Auburn in 2013. Under Dr. Johnson’s leadership, the College of Veterinary Medicine educates 480 veterinary students and 95 graduate students in biomedical sciences, and supports the professional activities of 148 faculty members. In 2014, he was selected as a Distinguished Scholar and Fellow in the National Academies of Practice and as the Distinguished Alumnus from the College of Veterinary Medicine at North Carolina State University.

Research Interests


Dr. Johnson’s laboratory investigates the pathogenesis of feline immunodeficiency virus (FIV) infection of domestic cats. FIV is a lentivirus that resembles HIV in virion structure and virus-host interaction. Members of the laboratory investigate issues relevant to pediatric HIV infection, including the influence of fetal infection on the ontogeny of the immune system, the role of the thymus in pediatric AIDS pathogenesis, and the development of novel therapeutic strategies to enhance thymus function. Clinical research interests include immunopathology, infectious diseases, and lymphoma.



Dingman, P., Levy, J.K., Kramer, L.J., Johnson, C.M., Lappin, M.R., Greiner, E.C., Courtney, C.H., Tucker, S.J., Morchon, R. (2010) Association of Wolbachia with heartworm disease in cats and dogs, Veterinary Parasitology, 170 (1-2), 50-60

Koehler, J.W., Johnson, C.M., Beard, D., and Green, N (2010) Pathology in Practice: Post-Traumatic Osteochondroma in a Dog. J Am Vet Med Assoc, 237 (1), 45-7

Shaheen B.W., Wang C., Oyarzobel, O., Johnson C.M., Kaltenboeck B., Boothe D.M. (2010) Evaluation of the contribution of gyrA mutation and efflux pumps to fluoroquinolone and multidrug resistance in canine and feline pathogenic Escherichia coli isolates, Am J Vet Res, 72 (1), 25-32

Kuhnt L.A., Jennings R.N., Brawner W.R., Hathcock J.T., Carreno A.D., Johnson C.M. (2009) Magnetic resonance imaging of radiation-induced thymic atrophy as a model for pathologic changes in acute feline immunodeficiency virus infection. Journal of Feline Medicine and Surgery, 11 (12), 977-84

Bhaiyat, M.I., Hariharan, H, Chikweto, A., Brathwaite-Sylvester, E, Burnett, PJA, Matthew, V, Oliveira, C, and Johnson, C.M. (2009) Concurrent lymphosarcoma and Salmonella enteritidis infection in a cat: a case report. Veterinarni Medicina, 54 (9) 451-54

Pohlman, L.M., Higginbotham, M.L., Welles, E.G., and Johnson, C.M. (2009) Immunophenotypic and Histologic Classification of 50 Cases of Feline Gastrointestinal Lymphoma. Vet Pathol, 46: 259-268

Drake, D.A., Carreno, A.D., Blagburn, B.L., Little, S.E., West, M.D., Hendrix, C.M., and Johnson, C.M. (2008) Proliferative Sparganosis in a Dog. J Am Vet Med Assoc, 233 (11) 1756-60

May, KA, Kuebelbeck, KL, and Johnson, C.M. (2008) Urinary Bladder Rupture Secondary to Penile and Preputial Squamous Cell Carcinoma in a Gelding. Equine Veterinary Education, 20 (3) 135-139

Carreno, A.D., Mergia, A., Novak, J., Gengozian, N., and Johnson, C.M. (2008) Loss of Naive (CD45RA+) CD4+ Lymphocytes During Pediatric Infection with Feline Immunodeficiency Virus. Veterinary Immunology and Immunopathology, 121: 161-168

Blagburn, B.L., Dillon, A.R., Tillson, D.M., Brawner, W.R., Welles, E., Johnson, C.M., Spencer, J.A., Kaltenboeck, B., Boothe, D.M., and Rynders, P. (2007) Feline Heartworm Disease: A New Perspective. Insights in Veterinary Medicine, 5:3 1-5

Novak, J.M., Crawford, P.C., Kolenda-Roberts, H.M., Johnson, C.M., and Mergia, A. (2007) Viral gene expression and provirus load of Orf-A defective FIV in lymphoid tissues and lymphocyte subpopulations of neonatal cats during acute and chronic infections. Virus Research, 130 (1-2): 110-120

Kolenda-Roberts, HM, Kuhnt, LA, Jennings, RN, Mergia, A, Gengozian, N, and Johnson, C.M. (2007) Immunopathogenesis of feline immunodeficiency virus infection in the fetal and neonatal cat. Frontiers in Bioscience, 12: 3668-3682

Carreno, AD, Alleman, AR, Barbet, AF, Palmer, GH, Noh, SM, and Johnson, C.M. (2007) In vivo endothelial cell infection by Anaplasma marginale, Veterinary Pathology, 44: 116-118

Sweat, JM, Johnson, C.M., Marikar, Y., Gibbs, EP (2005) Characterization of surface Interleukin-2 receptor expression on gated populations of peripheral blood mononuclear cells from manatees, Trichechus manatus latirostris, Veterinary Immunology and Immunopathology, 108: 269-283

Park, J, Nadeau, P, Zucali, JR, Johnson, C.M., Mergia, A (2005) Inhibition of simian immunodeficiency virus by foamy virus vectors expressing siRNAs, Virology, 343: 275-282

Crawford PC, Dubovi EJ, Castleman WL, Stephenson I, Gibbs EP, Chen L, Smith C, Hill RC, Ferro P, Pompey J, Bright RA, Medina MJ, Johnson C.M., Olsen CW, Cox NJ, Klimov AI, Katz JM, Donis RO (2005) Transmission of equine influenza virus to dogs., Science, 310 (5747): 482-485

Brown, L, Carter, TD, Snyder, P, Levy, JK, Johnson, C.M. (2005) Pulmonary Arterial Disease in Cats Seropositive for Dirofilaria Immitis But Lacking Cardiopulmonary Adult Heartworms, American Journal of Veterinary Research, 66(9): 1544-1549

Wellehan JF, Johnson AJ, Harrach B, Benko M, Pessier AP, Johnson C.M., Garner MM, Childress A, Jacobson ER (2004) Detection and analysis of six lizard adenoviruses by consensus primer PCR provides further evidence of a reptilian origin for the atadenoviruses, Journal of Virology, 78(23): 13366-13369

Johnson C.M., Gengozian N, Mergia A (2004) Hematopoiesis in the feline fetal liver: an assessment by flow cytometry, Veterinary Immunology and Immunopathology, 99(1-2): 53-62

Cook AL (2004) Beta 2 microglobulin and resistance to murine respiratory mycoplasmosis [Corrected citation 43 (4): 7], Contemporary Topics in Laboratory Animal Science / American Association for Laboratory Animal Science, 43(3): 18-24

Jacobson, ER, Robertson, DR, Lafortune, M, and Johnson, C.M. (2004) Renal Failure and Bilateral Thymoma in an American Bullfrog, Rana catesbiana, J Herpe Med Surg, 14(2): 15-20

Fleming, GJ, Heard DJ, Uhl, EW, Johnson, C.M. (2004) Thymic Hyperplasia in Sub-adult Galapagos Tortoises (Geochelone nigra), J Herpe Med Surg, 14(1): 24-27