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Photo: Patricia Pesavento

Patricia Pesavento- DVM, PhD
Pathology, Microbiology & Immunology

5323 Vet Med 3A
Davis, CA 95616

+1 530 752 1166


Research Focus

The Pesavento laboratory devotes considerable effort to analyzing novel patterns of disease, including clinically enigmatic diseases from animal shelters, the veterinary hospital, or the state diagnostic laboratory. We have a collaborative record of viral discovery that includes identification and characterization of virulent feline caliciviruses, canine diarrhea-associated viruses including Amdo-, Kobu, Sappo, and circoviruses, a bovine Astrovirus associated with encephalitis, canine and avian papillomaviruses, and a potentially oncogenic polyomavirus (RacPyV) from raccoons.

Aside from viral discovery, the organizing focus of work in the Pesavento laboratory is to investigate the biology of interactions between viruses and their target tissues. Depending on the virus this work ranges from the molecular development of viral constructs to perform cell biology or diagnostics, to tissue culture models of virus:host cell interaction. The laboratory has current focused efforts, using traditional pathology, molecular virology, and cellular biology, on the study of naturally occurring neuroglial tumors associated with RacPyV, and the potential contribution of circovirus (DogCV) to canine disease.

Specialty Focus

Anatomic Pathology


1994 PhD Cell and Molecular Biology, Harvard University, Department of Cellular and Developmental Biology,
2000 DVM , School of Veterinary Medicine, Davis, California


Diplomate American College of Veterinary Pathologists

Active Research Grants

Principal Investigator, Emerging Infectious Diseases, (Principal Investigator), Bernice Barbour Funds

Principal Investigator, The role of RacPyV in GBM tumorigenesis, (Principal Investigator), Meadowview Research, matched funds from the Center for Companion Animal Health

Principal Investigator, Canine Viral Diseases: Studies of the canine circovirus, (Principal Investigator), Theodore Holdsworth & Alice Lee Vandling Research Fund

Principal Investigator, Emerging and circulating veterinary viruses: Building a tissue and pathogen repository, (Principal Investigator), Boehringer Ingleheim Vetmedica Inc

Most Recent 10 Publications

  • Link Icon 2013 Chang Reissig E, Valli VE, Pesavento P, Massone AR, Iovanitti B, Gimeno EJ, Uzal FA Extranodal follicular lymphoma in the lung of a free-ranging red deer (Cervus elaphus). J Vet Diagn Invest,
  • Link Icon 2013 Li L, Diab S, McGraw S, Barr B, Traslavina R, Higgins R, Talbot T, Blanchard P, Rimoldi G, Fahsbender E, Page B, Phan TG, Wang C, Deng X, Pesavento P Divergent astrovirus associated with neurologic disease in cattle Emerg Infect Dis,
  • Link Icon 2013 Ng TF, Kondov NO, Hayashimoto N, Uchida R, Cha Y, Beyer AI, Wong W, Pesavento PA, Suemizu H, Muench MO, Delwart E Identification of an astrovirus commonly infecting laboratory mice in the US and Japan PLoS One,
  • Link Icon 2013 Li L, McGraw S, Zhu K, Leutenegger CM, Marks SL, Kubiski S, Gaffney P, Dela Cruz FN Jr, Wang C, Delwart E, Pesavento PA Circovirus in tissues of dogs with vasculitis and hemorrhage Emerg Infect Dis,
  • Link Icon 2013 Cannon MS, Johnson LR, Pesavento PA, Kass PH, Wisner ER Quantitative and qualitative computed tomographic characteristics of bronchiectasis in 12 dogs Vet Radiol Ultrasound,
  • Link Icon 2013 Pollard RE, Johnson EG, Pesavento PA, Baker TW, Cannon AB, Kass PH, Marks SL Effects of corn oil administered orally on conspicuity of ultrasonographic small intestinal lesions in dogs with lymphangiectasia Vet Radiol Ultrasound,
  • Link Icon 2013 Li L, Pesavento PA, Leutenegger CM, Estrada M, Coffey LL, Naccache SN, Samayoa E, Chiu C, Qiu J, Wang C, Deng X, Delwart E A novel bocavirus in canine liver Virol J,
  • Link Icon 2013 Dela Cruz FN Jr, Giannitti F, Li L, Woods LW, Del Valle L, Delwart E, Pesavento PA Novel polyomavirus associated with brain tumors in free-ranging raccoons, western United States Emerg Infect Dis,
  • Link Icon 2012 Gasper D, Barr B, Li H, Taus N, Peterson R, Benjamin G, Hunt T, Pesavento P Ibex-associated malignant catarrhal fever-like disease in a group of bongo antelope (Tragelaphus euryceros). Vet Pathol,
  • Link Icon 2012 Tokarz D, Poppenga R, Kaae J, Filigenzi M, Lowenstine LJ, Pesavento P Amanitin toxicosis in two cats with acute hepatic and renal failure Vet Pathol,

Most Recent 5 Book Chapters

2013 Hurley K, Pesavento P: Chapter 19: Disease recognition and diagnostic testing, Miller L, Zawistowski S, (ed), Shelter Medicine for Veterinarians and Staff, 2nd Ed, Ames, Iowa. 329-43.

2009 Pesavento P: Chapter 7: Necropsy techniques, Miller L, Hurley KF, (ed), Infectious Disease Management in Animal Shelters, Ames, Iowa. 107-21.