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Impact of CWD on Fetal Growth and Pregnancy Rates in Illinois White-tailed Deer

By Jameson Mori, Nelda A. Rivera, Jan Novakofski and Nohra E. Mateus-Pinilla

Deer behavior that may impact indirect transmission and exposure to CWD from an infected habitat (Tian et al., 2022). Photos: Key Deer by W. Tipton; Fawn with Mother by USFWS Midwest region.

CHAMPAIGN, IL – Understanding the role of diseases on reproduction is essential for safeguarding the reproductive health of wildlife populations. Furthermore, it enables informed decision-making, effective interventions, and targeted approaches to support reproductive health. In the article Impact of CWD on Fetal Growth and Pregnancy Rates in Illinois White-tailed Deer, Mori et al. summarize the latest research and their results related to the effect of CWD on Illinois white-tailed deer reproductive health.

For the complete story, please visit the Illinois Outdoor Journal, here.

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Deer protected from deadly disease by newly discovered genetic differences.

By LAUREN QUINN | University of Illinois at Urbana-Champaign

CHAMPAIGN, lL. – It was the height of summer 2022 when the calls started coming in. Scores of dead deer suddenly littered rural properties and park preserves, alarming the public and inconveniencing landowners. According to officials at the Urbana Park District, it was Epizootic Hemorrhagic Disease (EHD), a midge-borne viral illness that pops up in white-tailed deer populations around the state every few years. And when susceptible deer are infected, they die within days.

deer

Now, University of Illinois scientists have found gene variants in deer associated with the animals’ susceptibility to EHD.

Read the whole story by Phys.org here.

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My Experience at a Wildlife Veterinary Epidemiology Laboratory

By Miriam Schlessinger

Miriam Schlessinger with Evan London during the poster presentation of her research project at the Illinois Summer Research Symposium (July 21-22, 2022). Evan London, a Ph.D. student at the Wildlife Veterinary Epidemiology Lab, was one of Miriam’s mentors at the lab during her time with the Summer Research Opportunities Program.

CHAMPAIGN, IL – Miriam Schlessinger is a Panamanian-American in her junior year at Southern Illinois University, Edwardsville, majoring in integrative biology with a keen interest in infectious disease and ecology. In this article, Miriam shares her experience during her summer internship at a wildlife epidemiology laboratory. 

“From the tiniest microbes to the giants of the deep sea, studying wildlife and the ecological relationships between them has been a life goal of mine. In recent years, I have become captivated with exploring the relationship between infectious disease and wildlife ecology as it sits at the intersection of many scientific fields.“

For the complete story, please visit the Illinois Outdoor Journal, here.

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Miriam Schlessinger | Summer Research Opportunities Program (SROP), 2022

CHAMPAIGN, IL – Miriam, an undergraduate at Southern Illinois University Edwardsville, shares her experiences as an intern during the summer of 2022 at the Wildlife Veterinary Epidemiology Lab – Prairie Research Institute (PRI).

Miriam prepping a tissue sample along mentor, Dr. Nohra Mateus-Pinilla.

“I think this internship will and already has affected my academic career in so many positive ways. I have made great connections with people in the field of infectious disease as well as in related fields of ecology and wildlife biology. This experience has allowed me to feel like a real scientific researcher and that has given me even more motivation to continue my journey in academia.”

Read the whole story on the People of PRI news website, here.

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Occurrence of Hemorrhagic Disease in Illinois: Four Decades of Spatial and Temporal Changes

By Dr. Nelda A. Rivera, Dr. Nohra Mateus-Pinilla, and Dr. Jan Novakofski
HD outbreaks in white-tailed deer in the U.S. are usually seasonal, occurring from mid-summer to late autumn. The year 1998 was the first year with 163 reported HD cases in 16 counties in Illinois. In 2018, the number of HD cases reported was 462, and by 2019, 99 counties had reported cases in Illinois. Panel B modified from Dorak et al., 2022.

CHAMPAIGN, IL – In a recent study, 38 years of historical data were used to analyze Illinois’s spatial and temporal changes in Hemorrhagic disease (HD) affecting wild white-tailed deer.

“The results of Dorak et al. (2022) corroborate the importance of expanding surveillance efforts, collecting precise geographic locations during outbreaks, and the vital role of virus isolation in helping wildlife agencies understand and predict HD outbreaks and better inform the public.”

Read the whole story at the Outdoor Illinois Wildlife Journal, here.

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ICTWS Meeting – 2022

Congrats to our fantastic group of undergraduate students, graduate students, and lab members for their presentations at The 58th Annual Meeting of Illinois Chapter of The Wildlife Society, April 10-12.

Poster Presentations

Undergraduate Students

Rachel E. Lupas

 

A DNA Sequencing Strategy for Studying Novelty-seeking Behavior in White-tailed Deer (Odocoileus virginianus)

 

 

 

Nora Ryan

 

Shadow of the Prion Protein in Chronic Wasting Disease Wild White-tailed Deer (Odocoileus virginianus)

 

 

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UI researchers express concern about COVID-19 spread in deer populations

By VIVIAN LA | Assistant Daytime Editor

White-tailed deer in Illinois and other states can be infected with COVID-19, and Illinois researchers have concerns about how humans passed on the virus and what it means for the future of pandemic.

©Wildlife Veterinary Epidemiology Laboratory – Illinois Natural History Survey

In November, hundreds of white-tailed deer in Iowa tested positive for COVID-19, suggesting that humans are spreading the virus to animal populations and among one another.

This came after the U.S. Department of Agriculture released a study in August stating that COVID-19 antibodies were found in deer populations in Illinois, Michigan, New York and Pennsylvania. These antibodies suggested that deer were exposed but potentially not infected.

Read the whole story at The Daily Illini website, here.

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CWD Management in Illinois: Improving Turnaround Time

By Nelda A. Rivera, Nohra Mateus-Pinilla, William M. Brown.

“Some advantages of including the ELISA test are that ELISA uses fresh tissue, eliminating exposure to Formaldehyde for those taking and processing the samples. Furthermore, fresh samples can be shipped frozen and stored in less expensive containers (e.g., Whirl-Pak bags). Thus, they require less storage space and, therefore, reduce shipping costs. In addition, ELISA typically has a 4-day turnaround for results depending on the capacity of the diagnostic laboratory.”

During FY 2021, most of the samples received were processed within the first two weeks after the kill date. Therefore, there was a higher percentage of all the samples with completed test results by weeks 10 to 12 (Figure 3; Table 2).

CHAMPAIGN, IL – During the fiscal year 2021, the IDNR surveillance management program—in partnership with Wisconsin Veterinary Diagnostic Laboratory and the University of Missouri Veterinary Medical Diagnostic Laboratory—, improved the turnaround time of results of CWD by using a combination of ELISA test (for large-scale hunter harvest surveillance) and Immunohistochemistry (for “special permit surveillance” from IDNR and “suspect deer surveillance”).

 

Read the whole story at the Outdoor Illinois Wildlife Journal, here.

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HAEMOSPORIDIAN PARASITES IN ILLINOIS

Are blood parasites found in resident and migratory birds in Illinois?

By Kelsey Martin, Nelda A. Rivera,  Nohra E. Mateus-Pinilla [PDF]

 

Parasitic infections in birds are a significant threat to the health and conservation of avian species. Avian haemosporidian parasites are blood parasites found globally in birds. These blood parasites have a non-specific, broad range of avian hosts and are transmitted by biting vectors that participate in the parasites’ life cycle (Figure 1). For example, Leucocytozoon parasites are transmitted to birds by black flies, and mosquitoes transmit Plasmodium parasites (responsible for malaria) and Haemoproteus parasites. Similar to human malaria, infected birds may develop malaria-like disease,

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LEPTOSPIRA BACTERIA IN NATURAL AREAS

What is it? Who get it? and How it spreads?

By Roshni Mathur, Nelda A. Rivera,  Nohra E. Mateus-Pinilla [PDF]

 

 

You need to know that Leptospirosis is a disease caused by the bacteria Leptospira. The Leptospira bacteria are spread through infected animals’ urine, which can get into water or soil and survive there for weeks to months.1 The number of new cases of Leptospirosis has increased in humans and canines across North America. You also need to know that Leptospirosis in humans may cause mild flu-like symptoms, such as chills and headaches. However, when the bacteria affect organs, such as the liver, lungs, heart, and kidneys, it causes a more severe reaction that can lead to organ failure.2 The most severe Leptospirosis is commonly known as Weil’s disease in humans.3 Animals may suffer from a subclinical infection with mild symptoms to a more advanced condition involving multiple-organ failure and subsequent death.

Leptospirosis’s clinical signs and symptoms will depend on the animal species infected and the type of Leptospira serovar affecting them (a serovar is a variation in the Leptospira bacteria, also known as bacterial strain). Muscle pain, pancreatitis, uveitis (eye inflammation), dysuria (pain while urinating), hemolytic anemia, or respiratory disease are some of the clinical problems developed by animals. Leptospirosis in pregnant animals may result in abortion, stillbirths, weak newborns, or

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