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Photo: Patricia Ann Conrad

Patricia Ann Conrad- AS, BS, DVM, PhD
Professor and Researcher
Pathology, Microbiology & Immunology

5311 Vet Med 3A
Davis, CA 95616

+1 530 752 7210


Research Focus

One Health research approach to global human, animal (wild & domestic) and environmental health problems; Characterization, biology, pathogenesis and ecology of zoonotic protozoal parasites, particularly Neospora, Toxoplasma, Babesia and Sarcocystis spp. parasites

Specialty Focus

Protozoology; Global Health


1975 AS Preveterinary Medicine, Summa Cum Laude, Otero Junior College, La Junta, Colorado
1977 BS Veterinary Science, Colorado State University, Fort Collins, Colorado
1980 DVM Veterinary Medicine, Colorado State University, Fort Collins, Colorado
1984 PhD Protozoology/Tropical Animal Health, University of Edinburgh, Edinburgh, Scotland, United Kingdom

Honors and Awards

Patent Bovine Neospora Isolates and their Uses US Patent No. 5,707,617 issued 1/13/98
Patent Identification, Characterization & Expression of Neospora Recombinant Gene Fragments Encoding Immunodominant Antigens, US patent Nos. 5,889,166 (3/30/99),6,376,196(4/23/02), 6,716,423 (4/06/04), 6,777,192 (8/17/04), 7,056,501 (6/6/06)
Patent Recombinant Neospora Antigens and their uses, Patent No. 7,056,501 issued 6/06/06
Patent Equine Neospora Isolate, US patent No. 6,071,737, issued 6/06/00
2012 Elected to Fellowship in the American Academy of Microbiology
2012 R G Thomson Lecturer, Atlantic Veterinary College, Prince Edward Island
2012 American Society of Microbiology Division Z Lecturer
2011 Elected to the Institute of Medicine of the National Academies
2008-2010 Journal of Parasitology (most cited publication)
2006 Norman Levine Lecturship, University of Illinois
2004 Aldo Leopold Leadership Fellowship
2003 Oscar W. Schalm Lectureship
2002 Manuscript #99 was selected by American College of Zoological Medicine as Best Manuscipt of 2002
2001 Graduate Student, Dr. Melissa Miller (Checkowitz) was awarded Graduate Student Research Award for the Wildlife Disease Association
1999 Carl J. Norden Distinguished Teaching Award
1998 Pfizer Award for Research Excellence
1994 Presidential Symposium Speaker for American Association of Veterinary Parasitologists and American Veterinary Medical Association
1993 National Institutes of Health FIRST Award
1992 Charles Davis Foundation Journal Scholarship Award
1986 Cold Spring Harbor Laboratory Scholarship
1980-1983 Marshall Aid Commemoration Commission Scholarship

Active Research Grants

Principal Investigator, Research related to protozoal disease common to both horses and marine mammals of California, (Principal Investigator), Moss Foundation

Principal Investigator, Roles of Marine Host Cycle and Particle Aggregation in Transmission of Zoonotic Pathogens in Coastal Ecosystems, (Principal Investigator), National Science Foundation, Ecology of Infectious Disease Program

Principal Investigator, Improved Detection of Toxoplasma gondii Oocysts in Drinking and Recreational Waters, (Principal Investigator), California Ocean Protection Council

Co-Investigator, PREDICT: Wildlife SMART surveillance, Mazet (Principal Investigator), USAID Avian and Pandemic Influenza and Zoonotic Disease Program

Principal Investigator, UC Global Health Institute Center of Expertise: Water, Animals, Food, and Society, (Principal Investigator), Anonymous Donor

Co-Principal Investigator, GloCal Fellowship Program (PI for UCD), (Principal Investigator), UC Global Health Institute Program for Fellows and Scholars

Co-Investigator, PREDICT-2: Identifying and Monitoring "Hot Spots" for Evolution, Spillover, Amplification and Spread of Zoonotic Viruses with Pandemic Potential, Jonna Mazet (Principal Investigator), USAID

Most Recent 10 Publications

  • Link Icon 2014 Courtenay M, Conrad P, Wilkes M, La Ragione R, Fitzpatrick N Interprofessional initiatives between the human health professions and veterinary medical students: a scoping review. J Interprofession Care,
  • Link Icon 2014 Daniels ME, Hogan, J, Smith WA, Oates SC, Miller MA, Hardin, D, Shapiro K, Huertos ML, Conrad PA, Dominik C, Watson FG Estimating environmental conditions affecting protozoal pathogen removal in surface water wetland systems using a multi-scale, model-based approach. Sci Total Environ,
  • Link Icon 2014 Shender LA, De Los Santos M, Montgomery JM, Conrad PA, Ghersi BM, Razuri H, Lescano AG, Mazet JA Native rodent species are unlikely sources of infection for Leishmania (Viannia) braziliensis along the transoceanic highway in Madre de Dios, Peru. PLoS One,
  • Link Icon 2014 VanWormer E, Miller MA, Conrad PA, Grigg ME, Rejmanek D, Carpenter TE, Mazet JA Using molecular epidemiology to track Toxoplasma gondii from terrestrial carnivores to marine hosts: implications for public health and conservation. PLoS Negl Trop Dis,
  • Link Icon 2014 Adell AD, Miller WA, Harvey DJ, Van Wormer E, Wuertz S, Conrad PA Individual subject meta-analysis of parameters for Giardia duodenalis shedding in animal experimental models. Biomed Res Int,
  • Link Icon 2014 Pusterla N, Tamez-Trevino E, White, A, Vangeem J, Packham A, Conrad PA, Kass P Comparison of prevalence factors in horses with and without seropositivity to Neospora hughesi and/or Sarcocystis neurona. Vet J,
  • Link Icon 2014 Hogan JN, Miller WA, Cranfield MR, Ramer J, Hassell J, Noheri JB, Conrad PA, Gilardi KV Giardia in mountain gorillas (Gorilla beringei beringei), forest buffalo (Syncerus caffer), and domestic cattle in Volcanoes National Park, Rwanda. J Wildl Dis,
  • Link Icon 2013 Marcotty T, Thys E, Conrad PA, Godfroid J, Craig P, Zinsstag J, Meheus F, Bourary AR, Bade MA, Sahibi H, Filali H, Hendrickx S, Pissang C, Van Herp M, van der Roost D, Thys S, Hendrickx D, Claes M, Demeulenaere T, van Mierlo J, Dehoux J, Boelaert M Intersectoral collaboration between the medical and veterinary professions in low-resource societies: The role of research and training institutions Comp Immunol Microbiol Infect Dis,
  • Link Icon 2013 Awinda PO, Mealey RH, Williams LB, Conrad PA, Packham AE, Reif KE, Grause JF, Pelzel-McCluskey AM, Chung C, Bastos RG, Kappmeyer LS, Howe DK, Ness SL, Knowles DP, Ueti MW Serum antibodies from a subset of horses positive for Babesia caballi by competitive enzyme-linked immunosorbent assay demonstrate a protein recognition pattern that is not consistent with infection. Clin Vaccine Immunol,
  • Link Icon 2013 Vanwormer E, Conrad PA, Miller MA, Melli AC, Carpenter TE, Mazet JA Toxoplasma gondii, source to sea: higher contribution of domestic felids to terrestrial parasite loading despite lower infection prevalence. EcoHealth,

Most Recent 5 Book Chapters

2008 Brewer CA, Berkowitz AR, Conrad PA, Patz JA, Porter J, Waterman M: Educating about Infectious disease ecology, Ostfeld RS, Keesing F, Eviner VT, (ed), Infectious Disease Ecology: Effects of Ecosystems on Disease and of Disease on Ecosystems, Princeton, NJ. 448-68.

2001 Kjemtrup AM, Conrad PA: Emerging perspectives on human babesiosis, Scheld WM, Craig WA, Hughes JM, (ed), Emerging Infections, Washington DC. 175-95.

1995 Courtney C, Conrad PA, Boyce WB, Barlough J: Internal parasites, Seigal M, Barlough J, (ed), UC Davis Book of Dogs, New York, NY. 387-407.

1994 Anderson ML, Barr BC, Conrad PA: Protozoal causes of reproductive failure in domestic ruminants, Miller RB, (ed), Vet Clin N Am, Fd Anim Pract Diagn Abortion. 439-61.

1992 Conrad PA, Waldrup KA: Babesiosis and theileriosis in freeliving and captive artiodactylids, Fowler M, (ed), Zoo and Wildlife Medicine, Philadelphia, PA. 506-11.