Description

This presentation provides an overview of Theileria orientalis in Missouri cattle. It includes the biology, behavior, and expanding distribution of the Asian longhorned tick, the primary vector. It also addresses transmission routes, clinical signs, diagnostic methods, and current challenges in treatment and control of this disease. Findings from recent studies in Missouri herds are also discussed.  (Recorded July 8, 2025)

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Learning Objectives

Individuals who complete this course will be able to:

• Describe the biology and spread of the Asian longhorned tick in the United States.
• Recognize clinical signs and diagnostic features of Theileria orientalis infection in cattle.
• Understand known transmission routes, including tick-borne and mechanical pathways.
• Identify current treatment challenges and control options for managing Theileria orientalis.

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Course Content

This course contains:

• A recorded webinar and full transcript covering the topic
• A five-question quiz required for CE credit
• Supporting materials shared by the speaker
• An optional course evaluation survey

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Presenter: Rosalie Ierardi, DVM, DACVP, PhD

Dr. Ierardi is a board-certified veterinary anatomic pathologist and has been a faculty member at the MU Veterinary Medical Diagnostic Laboratory (VMDL) since 2020. Her PhD focused on the epidemiology of tick-borne disease in Missouri cattle, namely bovine anaplasmosis and Theileria-associated bovine anemia. More broadly, her research interests surround the pathology and epidemiology of infectious diseases in livestock, including analysis of diagnostic trends in livestock submissions to the VMDL. Dr. Ierardi’s work also includes postmortem examinations, interpretation of biopsies, and both hands-on and classroom teaching of veterinary students.

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Continuing Education (CE) Credit

This course is approved for 0.5 hours of veterinary continuing education (CE) credit by the University of Missouri College of Veterinary Medicine.

To earn CE credit, you must:

• View the full presentation or read the transcript
• Complete the 5-question quiz with at least 4 correct answers
• Download your CE certificate (instructions are provided in the module)

Please note: It is the participant’s responsibility to verify whether CE credit from an AVMA-accredited veterinary college meets the requirements of their state or licensing jurisdiction.

Course Evaluation

A brief, optional evaluation is available at the end of the course. Your feedback is valuable and helps us improve future courses.

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Accessibility & Support

• All videos include closed captions and downloadable transcripts.
• For disability-related accommodations, contact MU Extension ADA Support
• Canvas Support: teachingtools@umsystem.edu
• Course Coordinator: Craig Payne

Accommodations

We all learn differently, and we want every student to succeed. University of Missouri Extension complies with the Americans with Disabilities Act of 1990. If you have a disability and need accommodations in connection with this course, or you need materials in an alternate format, please notify your instructor as soon as possible so that necessary arrangements can be made.

MU Extension Equal opportunity, ADA institution information

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Inclusive Course Design

This course was created with a wide range of learners in mind.  The materials are designed to be accessible and support different ways of learning.

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Technical Requirements

Minimum Technology

• A reliable high-speed internet connection (DSL or cable recommended)
• A computer with an up-to-date operating system (Windows, macOS, or Linux)
• A current web browser, such as Google Chrome, Microsoft Edge, or Safari
• A processor speed of at least 1 GHz (or higher)

Technical & Digital Information Literacy Skills

• Ability to download, open, and save Microsoft Word and PDF documents
• Basic familiarity with Canvas features
• Use of basic computer peripherals: speakers or headphones for audio

Download the Canvas Student App to access your Canvas course from your mobile device.

For the best user experience, we recommend using Google Chrome (Safari for Macintosh). If you don't have Google Chrome installed on your computer, you can download it here.

If you have technical questions or need help, please email Canvas Support. You can find additional technical information on the Canvas website.

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Course Completion

Upon completion of all required components, participants may download a CE certificate from within the Canvas course. If needed, a transcript of completed MU Extension online courses may also be accessed through your Catalog account.