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Photo: Jonna Mazet

Jonna Mazet- BS, DVM, MPVM, PhD
Medicine & Epidemiology

+1 530 752 4167


Research Focus

The development and application of One Health methods for the advancement of global health problem solving, especially the understanding of emerging infectious diseases and the conservation of threatened species and ecosysytems. Research has focused on the emergences and impacts of zoonotic diseases and toxins at the animal-human-environment interface. Three major areas of emphasis: One Health risk assessments, emerging pathogen diagnostics, and ecology of zoonotic diseases and their impact on wildlife conservation and public health.

Specialty Focus

Epidemiology, One Health, Pathogen Pollution, Marine and Coastal Conservation, Emerging Infectious Diseases, Land Use Change, Climate Variability, Wildlife Health


1990 BS Veterinary Science, University of California, Davis,
1992 DVM , University of California, Davis,
1992 MPVM , University of California, Davis,
1996 PhD Wildlife Epidemiology, University of California, Davis,

Honors and Awards

2014 R.G. Thomson Lecturer, Atlantic Veterinary College, University of Prince Edward Island (Canada)
2013 Elected to the Institute of Medicine - One of the nation's highest honors in health and medicine
2012 Oscar W. Schalm Lectureship, University of California, Davis - Recognition of outstanding contributions in wildlife disease and One Health
2012 Outstanding Alumna Award, University of California, Davis
2011 International Wildlife Disease Association and American Association of Wildlife Veterinarians Joint Tom Thorne and Beth Williams Memorial Award - Most significant contribution to the field of wildlife health
2009 Paul Harris Fellow, Rotary International
2004 Resolution from the State of California in honor of making California the internationally recognized world leader in oiled wildlife response
2001 2000 Legacy Award States/British Columbia Oil Spill Task Force
2001 Appointed to the Governor of California's Oil Spill Technical Advisory Committee
1999 Sustained Superior Accomplishment Award, California Dept of Fish and Game
1998 Outstanding Team Award for the development and implementation of the Oiled Wildlife Care Network

Active Research Grants

Principal Investigator, PREDICT - Wildlife SMART Surveillance for Zoonotic Diseases of Pandemic Potential, (Principal Investigator), US Agency for International Development

Co-Investigator, Roles of Marine Host Cycle and Parasite Aggregation in Transmission of Zoonotic Pathogens in Coastal Ecosystems, Patricia Conrad (Principal Investigator), NSF Ecology and Evolution of Infectious Disease

Co-Investigator, Tuberculosis Epidemiology and Novel Transmission Routes in Rural Tanzania, Woutrina Miller (Principal Investigator), NIH

Principal Investigator, Strengthening Tanzanian Livestock Health and Pastoralist & Poultry Keeper's Nutrition and Livelihoods in a Changing Climate, (Principal Investigator), Innovation Lab, Colorado State University (USAID CRSP)

Co-Principal Investigator, California's oiled wildlife care network: administration, training, operations, research, and technology development, Michael Ziccardi (Principal Investigator), California Department of Fish and Wildlife

Principal Investigator, Improving Wildlife Health in Nepal, (Principal Investigator), UC Davis University Outreach & International Programs/School of Veterinary Medicine

Most Recent 10 Publications

  • Link Icon 2014 Roug A, Mazet J, Perez A, Clifford D, VanWormer E, Paul G, Kazwala R, Miller W Comparison of intervention methods for reducing human exposure to Mycobacterium bovis through milk in pastoralist households of Tanzania Preventive Veterinary Medicine,
  • Link Icon 2014 Roug A, Geoghegan C, Wellington E, Miller W, Travis E, Porter D, Cooper D, Clifford D, Mazet J, Parsons S Utility of a fecal real-time PCR protocol for detection of Mycobacterium bovis infection in African buffalo (Syncerus caffer) J Wildl Dis,
  • Link Icon 2014 Roug A, Clifford D, Mazet J, Kazwala R, John J, Coppolillo P, Smith W Spatial predictors of bovine tuberculosis infection and Brucella spp. exposure in pastoralist and agropastoralist livestock herds in the Ruaha ecosystem of Tanzania Tropical Animal Health and Production,
  • Link Icon 2014 Carrasco SE, Chomel BB, Gill VA, Kasten RW, Maggi RG, Breitschwerdt EB, Byrne BA, Burek-Huntington KA, Miller MA, Goldstein T, Mazet JA Novel Bartonella infection in northern and southern sea otters (Enhydra lutris kenyoni and Enhydra lutris nereis). Vet Microbio,
  • Link Icon 2014 VanWormer E, Miller MA, Conrad PA, Grigg ME, Rejmanek D, Carpenter TE, Mazet JAK Using Molecular Epidemiology to Track Toxoplasma gondii from Terrestrial Carnivores to Marine Hosts: Implications for Public Health and Conservation PLOS Neglected Tropical Diseases,
  • Link Icon 2013 Ge X, Li, J Yang, X Chmura A, Zhu G, Epstein J, Mazet J, Hu B, Zhang W, Peng C, Zhang Y, Luo C, Tan B, Wang N, Zhu Y, Crameri G, Zhang S, Wang L,, Daszak P, Shi Z Isolation and characterization of bat SARS-like coronaviruses that uses the ACE2 receptor Nature,
  • Link Icon 2013 Olson S, Gilbert M, Cheng M, Mazet J, Joly D Historic prevalence and distribution of avian influenza A subtype H7N9 in wild birds: implications for wild bird surveillance Emerg Infect Dis,
  • Link Icon 2013 VanWormer E, Fritz H, Shapiro K, Mazet J, Conrad P Molecules to modeling: Toxoplasma gondii oocysts at the human-animal-environment interface Comp Immunol Microbiol Infect Dis,
  • Link Icon 2013 Anthony S, Epstein J, Murray K, Navarrete-Macias I, Zambrana-Torrelio C, Solovyov A, Ojeda-Flores R, Arrigo N, Islam A, Ali Khan S, Hosseini P, Bogich T, Olival K, Sanchez-Leon M, Karesh W, Goldstein T, Luby S, Morse S, Mazet J, Daszak P, Lipkin W A strategy to estimate unknown viral diversity in mammals mBio,
  • Link Icon 2013 VanWormer E, Conrad P, Miller M, Melli A, Carpenter T, Mazet J Toxoplasma gondii, Source to Sea: Higher contribution of domestic felids to terrestrial parasite loading despite lower infection prevalence EcoHealth,

Most Recent 5 Book Chapters

2012 Bogich TL, Olival KJ, Hosseini PR, Zambrana-Torrelio C, Loh E, Funk S, Brito IL, Epstein JH, JS, Joly DO, Levy MA, Jones KE, Morse SS, Aguirre AA, Karesh WB, Mazet JAK, Daszak P: Using mathematical models in a unified approach to predicting the next emerging infectious disease, Aguirre AA, Ostfeld R, Daszak P, (ed), New Directions in Conservation Medicine: Applied Cases of Ecological Health, New York, NY. .

2010 Mazet JAK, Johnson CK: Approaching health problems at the wildlife-domestic animal interface, Miller RE, Fowler ME, (ed), Zoo and Wild Animal Medicine: Current Therapy, 7th ed., St. Louis, MI. 153-60.

2002 Mazet J: Overview: Managing for biodiversity, Rappaport D, Qualset C, Lasley W, Damania A, (ed), Managing for Healthy Ecosystems, Boca Raton, FL. 353.