Ogi Okwumabua



Dr. Ogi Okwumabua obtained his BSc degree from the Faculty of Science, University of Alberta, Canada. He then received his MS from the School of Applied Biology, Georgia Institute of Technology, Atlanta, USA and PhD from the Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, USA. The three degrees were all in general and molecular microbiology with emphasis in infectious diseases of human and animals. Over the years he worked at various capacities with different organizations and served different but related roles. He has many publications in various scientific journals. Currently he is a Professor in the Department of Pathobiological Sciences, University of Wisconsin Madison, United States.


Area of Interest

1. Whole genome sequencing of pathogenic bacteria

2. Identification of virulence associated and novel genes

3. Zoonosis

4. Recombinant subunit and modified live vaccines

5. Diagnostic reagents development

6. Characterization and molecular sub-typing of bacteria of medical importance

7. Molecular mechanism of microbial pathogenesis

8. Evolution and dissemination of drug resistance among bacterial pathogens

top publication

1. Bennett, A. M., D. C. Shippt, N. M. Eakley, O. Okwumabua, A. A. Fadl. 2016. Functional Characterization of Glucosamine-6-Phosphate Synthase (GlmS) in Salmonella enterica serovar Enteriditis. Arch. Microbiol. (in press).
2. Ruegg, P., L. Oliveira, W. Jin, and O. Okwumabua. 2015. Phenotypic Antimicrobial Susceptibility and Occurrence of selected Resistance Genes in Gram Positive Mastitis Pathogens Isolated from Wisconsin Dairy Cows. J. Dairy. Sci. 98:4521-4534.
3. Egwari, L.O., E. S Oghogho, O. E. Okwumabua, and M. I. Oniha. 2014. Preliminary Screening for Toxin Genes amongst Stock Cultures of Clostridium perfringens strains isolated from Dogs and Calves. South Asian Journal of Experimental Biology. 4:127-132
4. Brower, A., N. Lucero, O. Okwumabua, K. K. Gopaul, A. M. Whatmore, S. L. Cravero, and M. D. Trangoni. 2012. Newly identified variability in Brucella canis fatty acid content is associated with geographic origin. Epidemiol. and Infect. 141:852-8.
5. Krugner-Higby, L., R. Brown, M. Rassette, M. Behr, O. Okwumabua, M. Cook, C. Bell, M. Flowers, J. Ntambi, and A. Gendron. 2012. Ulcerative Dermatitis in C57BL/6 Mice Lacking Stearoyl CoA Desaturase 1. Comp. Med. 62:257-263
6. Mikheil, D.M., D.C Shippy, N.M Eakley, O. Okwumabua, and A.A Fadl. 2012. Deletion of Gene Encoding Methyltransferase (gidB) Confers High-Level Antimicrobial Resistance in Salmonella. J of Antibiotics 65:185-192
7. Schmidt, S., M. O’Connor and O. Okwumabua. 2011. The Pathogenicity Island-Like DNA Segment Associated with Chinese Outbreak Strain of Streptococcus suis Serotype 2 is absent in the United States Isolates. Int. J. Mol Epidemiol. Genet. 2:56-60.
8. Okwumabua, O., Tou-Vou Moua, T. Danz, J. Quinn, M. O’Connor and S. Gibons-Burgener. 2010. Growth Rate Retardation and Inhibitory Effect of para-JEM Blue on Mycobacterium avium subspecies paratuberculosis. J. Vet. Diagn. Invest. 22:734-737.
9. Okwumabua, O., E. Shull, Tou-Vou Moua, and T. Danz. 2010. Comparison of Three Methods for Extraction of Mycobacterium avium subspecies paratuberculosis DNA for Polymerase Chain Reaction from Broth-Based Culture Systems. J. Vet. Diagn. Invest. 22:67-69
10. Kutz, R., and O. Okwumabua. 2008. Differentiation of Highly Virulent Strains of Streptococcus suis Serotype 2 According to Glutamate Dehydrogenase Electrophoretic and Sequence Type. J. Clin. Microbiol. 46:3201-3207.
11. Brower, A., O. Okwumabua, C. Massengill, Q. Muenk, P. Vanderloo, M. Duster, K. Homb, and K. Kurth. 2007. Investigation of the spread of Brucella canis via the U.S. interstate dog trade. Int. J. Infect. Dis. 11:454-458.
12. Okwumabua, O., M. O’Connor, E. Shull, K. Strelow, M. Hamacher, T. Kurzynski and D. Warshauer. 2005. Characterization of Listeria monocytogenes Isolates from Food Animal Clinical Cases: PFGE Pattern Similarity to Strains from Human Listeriosis cases. FEMS Microbiol. Lett. 249:275-281.
13. Okwumabua, O., S. Chinnapapakkagari. 2005. Identification of the Gene Encoding a 38-kilodalton Immunogenic and Protective Antigen of Streptococcus suis. Clin. Dign. 12: 484-490.
14. Okwumabua, O., M. O’Oconnor, and E. Shull. 2003. A Polymerase Chain Reaction (PCR) Assay Specific for Streptococcus suis Based on the Gene Encoding the Glutamate Dehydrogenase. FEMS Microbiol. Lett. 218:79-84.
15. Okwumabua, O., J. Persaud and P. G. Reddy. 2001. Cloning and Characterization of the Gene Encoding the Glutamate Dehydrogenase of Streptococcus suis Serotype 2. Clin. Diagn. Lab. Immunol. 8:251-257.