Oklahoma Animal Disease Diagnostic Laboratory

11/19/2025

❗️Please submit your samples❗️

❗️EHV OUTBREAK TESTING❗️

🔬OADDL is ready and prepared for your EHV test🔬

If your horse needs testing, please submit a deep nasal swab along with an EDTA (purple-top) blood tube.

If you have any questions, contact the lab at 405-744-6623.

Collecting the test:

❗️Deep Nasal Pharyngeal synthetic swab
❗️Avoid cotton swabs
❗️Keep the sample chilled

11/19/2025

EHV Outbreak Testing at OADDL
We have confirmed two positive cases of EHV-1 in the state from horses with neurologic signs. If your horse needs tested, please submit a deep nasal swab and an EDTA (purple top) tube of blood.
Call the lab with any questions at 405-744-6623.
Stay safe, quarantine!

11/19/2025

***UPDATE***

As of 9 a.m. on Wednesday, Nov. 19, there are multiple confirmed cases of Equine Herpes Myleoencephalopathy, the neurologic form of EHV-1 and exposure risks in horses that attended the WPRA Finals in Waco, Texas between Nov. 5 and Nov. 9. We have confirmed two cases of EHM in horses that attended the Barrel Futurities of America World Championship at Lazy E Arena this week.

The BAF World Championship has been cancelled and horses who were at either event should be taken home, isolated, and quarantined for the next 14 days.

EHM spreads through horse contact, shared buckets and/or tack, contaminated trailers, airborne droplets from horses coughing or snorting and from people who handle exposed horses. Exposed horses that were at either of the events should be isolated at least 30 feet, but as far as possible, from other horses. Efforts to prevent air movement from exposed horses to unexposed horses should be made. Exposed horses are not allowed to move off the home premises until they have completed 14 days with no symptoms. Unexposed horses may travel to events, although it is recommended, they do not leave the premises unless truly necessary.

Owners should watch for:
Fever over 101.5
Nasal Discharge
Lethargy
Hind end weakness
Any neurological issues

If you notice any of the symptoms, please contact your veterinarian immediately. Cases that show neurological issues are considered a medical emergency.

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ANIMAL HEALTH ALERT

The Oklahoma State Veterinarian has been made aware of a possible Equine Herpesvirus Myeloencephalopathy exposure at the WPRA event in Waco, Texas Nov. 5 through Nov. 9.

We are working closely with Lazy E Arena, as some of the horses from the WPRA event could be in Guthrie this week for the Barrel Futurities of America World Championship.

If you are from Oklahoma and were at the WPRA event – it is recommended you go home and quarantine your horse. If EHM is confirmed, horses who were in the Waco event will be required to quarantine at home.

Owners should monitor the temperature of their horse for spikes of 101.5 or above and increase biosecurity measures.

For questions about quarantine or EHM exposure, call the Oklahoma State Veterinarian's office at 405.522.6141.

Updates will be provided as they become available.

11/15/2025

**UPDATE**

As of 7:30 a.m. on Friday, Nov. 14, a second case has been confimed in a backyard flock in McClain County.

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ANIMAL DISEASE ALERT: A positive case of Highly Pathogenic Avian Influenza has been confirmed in Grady County.

Flock owners should take every precaution to protect their flock by preventing their poultry’s exposure to wild birds and any areas where wild birds have been.

Sick domestic birds should be reported to ODAFF immediately at 405-522-6141.yn

10/23/2025

❗️Attention Swine Exhibitors❗️

As a reminder, the time is approaching for show swine to be getting ready for the winter and spring show season. Swine must be tested negative for Brucellosis and Pseudorabies on or after November 10 to be eligible to show through OYE without additional testing.

For more information regarding swine testing, visit our website ➡️ http://bit.ly/43zklTj

05/12/2025

Attention horse owners! Now is the time to vaccinate against West Nile Virus and other diseases such as Sleeping Sickness, Tetanus and Rabies. These are all diseases that horses can be infected by without even being exposed to another horse.

Protect your horses by reducing mosquito exposure with simple practices:
✔️ Change drinking water regularly
✔️ Mow tall grass
✔️ Drain stagnant water
✔️ Install stable fans
✔️ Use insect repellents
✔️ Keep horses indoors at dawn and dusk

ODAFF asks horse owners and event managers remain at a heightened level of awareness, implement biosecurity practices to minimize potential exposure and consult with a veterinarian on an appropriate vaccination schedule.

All reportable diseases must be reported immediately to the State Veterinarian’s Office upon suspicion of clinical disease.

04/14/2025

🌟Outstanding Senior🌟

Congratulations to our very own, Jared Stone on being selected as an outstanding senior.

During his time at OSU, Stone has worked at OADDL and his hard work and dedication has not gone unnoticed. Stone plans to attend veterinary school in the fall.

Congratulations! 🎉

Jared Stone of Chandler, Oklahoma, was recently named the Oklahoma State University Ferguson College of Agriculture 2025 Louis and Betty Gardner Outstanding Senior.

03/13/2025

ANIMAL DISEASE ALERT: Positive cases of HPAI have been confirmed in Grady County and Woodward County.

Flock owners should take every precaution to protect their flock by preventing their poultry’s exposure to wild birds and any areas where wild birds have been.

Sick domestic birds should be reported immediately to 405-522-6141.

02/19/2025

OSU and OADDL will be closed again tomorrow, Thursday, 2/20 due to continued inclement weather. We have been processing mail, samples in the vestibule and necropsies each day. Please note testing will be delayed.

02/17/2025

OSU and OADDL will be closed for inclement weather Tuesday, February 18th and Wednesday, February 19th. Call 405-744-6623 to schedule necropsy submissions. Additional details below.
Stay warm and safe!

02/11/2025

Inclement weather closure for Wednesday, February 12, 2025.
Stay safe everyone!

01/18/2025

It’s here! The 2024 edition of Vet Cetera magazine is officially out! 📖 Read it now ➡️ okla.st/42iGXrI