Claire B Andreasen

University Professor Emeritus
Veterinary Pathology
candreas@iastate.edu

ISU Directory Link

General

Curriculum vitae

Education & Certifications

1994 - Diplomate, American College of Veterinary Pathologists (Clinical Pathology)

1987-1990 - PhD, Pathology, University of Georgia, Athens, Georgia. Dissertation:  Heterophil function in healthy chickens and in chickens with staphylococcal tenosynovitis.

1985-1987 - MS, Pathology, University of Georgia, Athens, Georgia. Thesis:  Intermediate filament staining in the histologic and cytologic diagnosis of canine skin and soft tissue tumors.

1979-1982 - DVM, Texas A & M University, College Station, Texas.

1981 - BS, Veterinary Medicine, Summa Cum Laude, Texas A & M University, College Station, Texas

1975-1979 - BS, Biomedical Science, Summa Cum Laude, Texas A & M University, College Station, Texas

Teaching

Clinical Pathology Laboratory Practicum -- V PTH 457

Research Focus & Interests

Dr. Andreasen's scientific expertise and experience are in the areas of comparative clinical pathology, with primary research emphasis in granulocyte function and use of immunomodulators during bacterial diseases; pathogenic mechanisms of host cellular interactions and infectious agents; specifically in poultry, fish, and animal models . Additional involvement has been with foreign and emerging animal disease education, diagnostic learning, and teaching methods.

Honors & Awards

• University Professor 2021
• ISU Foundation Outstanding Achievement in Departmental Leadership 2005
• SCAVMA Clinical Science Teaching Award 2001
• SmithKline Beecham (Pfizer) Award for Research Excellence 1994

Leadership/Committees/Council

• University Professor, Emerita, 2025-present
• University Professor, 2021
• Clinical Pathology Laboratory Director, 2022-2025
• Clinical Pathology residency coordinator, 2018-2025 
• Interim Director of Graduate Education (DOGE), Veterinary Pathology, 2023-2024
• Professor, Dr. Roger and Marilyn Mahr Professorship in One Health, 2018-2022
• Professor and Director of One Health, 2016
• Associate Dean for Academic and Student Affairs, 2010-2016
• Chair, Department of Veterinary Pathology, 2001-2011
• Interim Chair, Department of Veterinary Clinical Sciences, 2008-2009
• Special Assistant and Intern, Office of the Provost, 2005-2006
• Director, Clinical Pathology Laboratory, 2000-2011
• Chair, Academic Deans, American Association of Veterinary Medical Colleges, 2013
• President, American College of Veterinary Pathologists, 2011
• President, American Society for Veterinary Clinical Pathology, 2000
• Editorial Board, Veterinary Pathology, 1997-1999
• Ad hoc, Board of Scientific Reviewers, American Journal of Veterinary Research, 1993-present
   

Memberships

• American Association of Veterinary Laboratory Diagnosticians
• American College of Veterinary Pathologists
• American Society for Veterinary Clinical Pathology
• American Association of Avian Pathologists 
• American Veterinary Medical Association
• Phi Zeta
• Iowa Veterinary Medical Association

Selected Publications

dos Santos Ribeiro P, Judith Stasko J, Adrienne Shircliff A, Fernandes LG, PhD, Putz EJ, PhD, Andreasen C, Azevedo V, Ristow P, Nally JE. Investigations into the growth and formation of biofilm by Leptospira at temperatures encountered during infection: Biofilm 2025; Vol 9; 100243, ISSN 2590-2075,

Putz EJ, Andreasen CB, Stasko JA, Hamond C, Olsen SC, Nally JE, Palmer MV. Circulating foamy macrophages and other features of Mycobacterium bovis Bacillus Calmette-Guérin challenge in Golden Syrian hamsters. Vaccine 2025; May 10;55:127037. doi: 10.1016/j.vaccine.2025.127037. 

Putz EJ, Andreasen CB, Boggiatto P, Palmer MV, Fernandes LGV, Tibbs-Cortes B, Stasko JA, Hamond C, Olsen SC, Nally JE. Peromyseus deer mice as an acute rodent model of leptospirosis. Emerging Infect Dis, 2025: Vol 31 (7), 1353-1365.

Putz EJ, Andreasen CB, Stasko JA, Fernandes LGV, Palmer MV, Rauh MJ, Nally JE. Circulating foamy macrophages in the Golden Syrian Hamster model of Leptospirosis. J Comp Pathol 2021;189:98-109.

Pickering BS, Smith G, Pinette MM, Embury-Hyatt C, Moffat E, Marszal P, Lewis CE. Susceptibility of domestic swine to experimental infection with severe acute respiratory syndrome Coronavirus 2. Emerg Infect Dis  2021;27(1):104-112. [C. Andreasen-collaborator, acknowledgement - clinical pathology data]

Johannes C, Heinrich E, Musser M, Andreasen C. Hypercalcemia of malignancy associated with exocrine pancreatic adenocarcinoma in a dog. Vet Rec Case Rep 2020; 8:e001190. doi:10.1136/vetreccr-2020-001190 

Smith JS, Olivarez JD, Brewer MT, Hiscocks MR, Andreasen CB. Lungworm infection in a central Iowa beef herd. Vet Rec Case Rep 2020, 8: e001001. doi: 10.1136/vetreccr-2019-001001

Rowland K, Persia ME, Rothschild MF, Schmidt C, Lamont SJ. Venous blood gas and chemistry components are moderately heritable in commercial white egg-laying hens under acute or chronic heat exposure. Poult Sci. 2019 Sep 1;98(9):3426-3430. [C. Andreasen-collaborator, acknowledgement- clinical chemistry, i-STAT]

Redmond SB, Chuammitri P, Andreasen CB, Palic D, Lamont SJ. Proportion of circulating chicken heterophils and CXCLi2 expression in response to Salmonella enteritidis are affected by genetic line and immune modulating diet.  Vet Immunol Immunopathol 2011;140:323-328.

Harm TA, Andreasen CB. Chapter 14. Cardiovascular and Hematopoietic Systems. In: Diseases of Swine, 12th ed.  JJ Zimmerman, LA Karriker, A Ramirez, KJ Schwartz, J Zhang eds. John Wiley & Sons, Inc. pp. 255-271, 2025.

Andreasen CB. Neutrophil Structure and Biochemistry. In: Schalm’s Veterinary Hematology, 7th ed., DJ Weiss, K J Wardrop, K Harr, D Seelig, M Brooks eds. Wiley-Blackwell, pp. 333-338, 2022.

LeVine DN, Andreasen CB. Neutrophil Function and Response. In: Schalm’s Veterinary Hematology, 7th ed., DJ Weiss, K J Wardrop, K Harr, D Seelig, M Brooks eds. Wiley-Blackwell, pp. 339-346, 2022.

Andreasen CB. Staphylococcosis. In: Diseases of Poultry. 14th ed, DE Swayne (ed in chief), M Boulianne, LR McDougald, V Nair, CM Logue, DL Suarez (assoc eds.) Wiley-Blackwell Publishing, Ames, IA, pp. 995-1003, 2020.

Andreasen CB, Sorden SD. Images of Diseases- Section 3. In: Transboundry and Emerging Diseases of Animals. AR Spickler, JA Roth, G Brown, J Galyon, eds. 1st edition, IICAB/OIE, Iowa State University, 2016, pp,282-327.