WSU Veterinary Student Tessa Williams Researches Respiratory Pathogen Threatening Livestock and Wildlife

Undergraduate Degree: Biology (Idaho State)

Area of Interest: Mixed Animal

Tessa Williams, a Doctor of Veterinary Medicine (DVM) student from Washington State University in the Class of 2028, is conducting summer research on a respiratory pathogen affecting both livestock and wildlife. Collaborating with Dr. Craig McConnel, her project investigates the prevalence of Mycoplasma ovipneumoniae (M. ovi) among domestic goats and sheep in the Hells Canyon region.

While M. ovi typically causes mild symptoms in domestic animals, it poses a serious threat to bighorn sheep, leading to severe respiratory illness and high mortality rates. Domestic flocks can serve as reservoirs for this pathogen, making it crucial to understand infection patterns in these populations to prevent spillover effects into vulnerable wildlife herds.

Williams’ research entails collecting nasal swabs from goats and sheep within high-risk areas where domestic animals and bighorn sheep coexist. The samples will undergo PCR testing to assess infection rates and will allow her to compare prevalence across species and evaluate factors such as age that may influence infection status. Additionally, her study will include data on herd management practices and proximity to bighorn sheep, providing valuable context for assessing disease risk.

The results are anticipated to generate updated baseline data using advanced diagnostic techniques, aiding in the development of surveillance strategies, outreach initiatives, and disease prevention measures at the livestock-wildlife interface.

Williams emphasizes her passion for small ruminants and population health, stating, "Veterinary medicine is about promoting animal welfare for all, regardless of which side of the fenceline they are on."