Linda M. Knudtson, PhD

Associate of Microbiology and Immunology

Contact Information

3-654 Bowen Science Building
51 Newton Rd
Iowa City, IA 52242


BS, Iowa State University
PhD, Microbiology, Iowa State University
Postdoctoral Fellow, Iowa State University

Research Summary

I have been with the Department of Microbiology since 2003. During that time I have been involved in several courses. My current courses include: Mechanisms of Health and Disease IV, Pharmacy and Nursing Microbiology, and Summer Web-Based Nursing Microbiology.

I started out with a degree in Microbiology, Zoology and Chemistry and became a Medical Technologist in the hospital setting. I soon found that I loved the clinical emphasis, especially in Microbiology. I received my Ph.D. in Microbiology in 1992, from Iowa State University. My research involved Enterococci. I studied the identification of new enterococcal species and their association with food and meat spoilage.

After obtaining my Ph.D., I worked in the Salt Lake City/County Health Department, then as the microbiology department head in a 250-bed hospital in Salt Lake. I served on the infection Control Committee for the hospital and gained a lot of insight into the epidemiology of disease, another love of mine. At The University of Iowa, I write lab manuals and design new lab adventures for my students. I also lecture, including examples of my own clinical experience (some more entertaining than others). I love teaching and feel very lucky to be able to put all my energy into teaching medical professionals in clinical microbiology.

In my free time I am a chauffer to my 3 kids, I do home improvement projects and I like spending time with my family.


Knudtson, L., Hartman, P. A. (1993). Comparison of fluorescent gentamicin-thallous-carbonate and KF streptococcal agars to enumerate enterococci and fecal streptococci in meats. Appl Environ Microbiol, 59(3), 936-8. PMID: 8481014.

Knudtson, L., Hartman, P. A. (1993). Antibiotic resistance among enterococcal isolates from clinical and environmental sources. J Food Prot, 56, 489-92.

Knudtson, L., Hartman, P. A. (1993). Enterococci in pork processing. J Food Prot, 56, 6-9, 17.

Knudtson, L., Hartman, P. A. (1992). Comparison of four latex agglutination kits to rapidly identify Lancefield group D enterococci and fecal streptococci. Journal of Rapid Methods & Automation in Microbiology, 1(4), 301-4.

Knudtson, L., Hartman, P. A. (1992). Routine procedures for isolation and identification of enterococci and fecal streptococci. Appl Environ Microbiol, 58(9), 3027-31. PMID: 1444416.

Hartman, P. A., Deibel, R. H. & Knudtson, L. (1992). Enterococci. In C. Vanderzant , D. F. Splittstoesser (Eds.) Compendium of methods for the microbiological examination of foods. (3rd edition), pp. 523-31. American Public Health Association, Washington, DC.

Knudtson, L., Hartman, P. A. (1992). Enterococci in pork processing. pp. 334 (P-60). Abstr Ann Meet Amer Soc Microbiol, New Orleans, LA.

Knudtson, L., Hartman, P. A. (1991). Classification of the genus Enterococcus using conventional test procedures. pp. 242 (R-40. Abstr Ann Meet Amer Soc Microbiol, Dallas, TX.