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<p class="MsoNormal">Directors,<o:p></o:p></p>
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<p class="MsoNormal">You should also be made aware of this.<o:p></o:p></p>
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<p class="MsoNormal">Ed<o:p></o:p></p>
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<p class="MsoNormal" style="line-height:105%"><b><span style="font-size:14.0pt;line-height:105%;color:#0C234B;mso-ligatures:standardcontextual">Edward C. Martin, Ph.D.</span></b><span style="font-size:10.0pt;line-height:105%;font-family:"Times New Roman",serif;color:#767676;mso-ligatures:standardcontextual"><br>
</span><span style="font-size:10.0pt;line-height:105%;mso-ligatures:standardcontextual">Associate Vice President and Director</span><span style="font-size:10.0pt;line-height:105%;font-family:"Calibri",sans-serif;mso-ligatures:standardcontextual"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:105%"><span style="font-size:10.0pt;line-height:105%;mso-ligatures:standardcontextual">Cooperative Extension</span><span style="font-size:10.0pt;line-height:105%;mso-ligatures:standardcontextual"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:105%"><span style="font-size:10.0pt;line-height:105%;mso-ligatures:standardcontextual">Division of Agriculture, Life, & Veterinary Sciences, and Cooperative Extension<o:p></o:p></span></p>
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</span><span style="font-size:10.0pt;line-height:105%;mso-ligatures:standardcontextual">Professor/Extension Specialist - Biosystems Engineering</span><span style="font-size:10.0pt;line-height:105%;font-family:"Times New Roman",serif;mso-ligatures:standardcontextual"><br>
</span><span style="font-size:10.0pt;line-height:105%;mso-ligatures:standardcontextual">THE UNIVERSITY OF ARIZONA<o:p></o:p></span></p>
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<p class="MsoNormal" style="line-height:105%"><span style="font-size:10.0pt;line-height:105%;border:none windowtext 1.0pt;padding:0in;mso-ligatures:standardcontextual">Forbes Building, Room 301 | 1140 E. South Campus Drive<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:105%"><span style="font-size:10.0pt;line-height:105%;border:none windowtext 1.0pt;padding:0in;mso-ligatures:standardcontextual">P.O. Box 210036 | Tucson, AZ 85721-0036</span><span style="font-size:10.0pt;line-height:105%;mso-ligatures:standardcontextual"><br>
</span><span style="font-size:9.0pt;line-height:105%;mso-ligatures:standardcontextual">Office: 520-621-7145</span><span style="font-size:10.0pt;line-height:105%;mso-ligatures:standardcontextual"> |
</span><span style="font-size:9.0pt;line-height:105%;mso-ligatures:standardcontextual"> </span><span style="font-size:10.0pt;line-height:105%;mso-ligatures:standardcontextual">Cell: 520-709-0939<span style="color:#767676">
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</span></span><span style="mso-ligatures:standardcontextual"><a href="mailto:ecmartin@arizona.edu"><span style="font-size:10.0pt;line-height:105%;color:#467886">ecmartin@arizona.edu</span></a></span><span style="font-size:10.0pt;line-height:105%;mso-ligatures:standardcontextual"><o:p></o:p></span></p>
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<p class="MsoNormal" style="line-height:105%"><span style="font-size:9.0pt;line-height:105%;color:#767676;mso-ligatures:standardcontextual">We respectfully acknowledge the University of Arizona is on the land and territories of Indigenous peoples. Today, Arizona
is home to 22 federally recognized tribes, with Tucson being home to the O’odham and the Yaqui. The University strives to build sustainable relationships with sovereign Native Nations and Indigenous communities through education offerings, partnerships, and
community service.<o:p></o:p></span></p>
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<p class="MsoNormal" style="line-height:105%"><span style="font-size:9.0pt;line-height:105%;mso-ligatures:standardcontextual"><a href="https://www.facebook.com/UArizonaCooperativeExtension">https://www.facebook.com/UArizonaCooperativeExtension</a><span style="color:#767676"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="line-height:105%"><span style="font-size:9.0pt;line-height:105%;mso-ligatures:standardcontextual"><a href="https://www.facebook.com/MaricopaCountyCooperativeExtension/"><span style="color:#8B0015">facebook</span></a><span style="color:#767676">
| </span><a href="https://twitter.com/azcoopext"><span style="color:#8B0015">twitter</span></a><span style="color:#767676"> |
</span><a href="https://www.instagram.com/azcoopext/"><span style="color:#8B0015">instagram</span></a><span style="color:#767676"> |
</span><a href="https://www.linkedin.com/school/the-university-of-arizona"><span style="color:#8B0015">linkedin</span></a></span><span style="font-size:9.0pt;line-height:105%;color:#767676;mso-ligatures:standardcontextual">
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> 4h-request@list.arizona.edu <4h-request@list.arizona.edu>
<b>On Behalf Of </b>"Greene, Betsy - (betsygreene)"<br>
<b>Sent:</b> Sunday, February 1, 2026 12:25 PM<br>
<b>To:</b> 4h@list.arizona.edu<br>
<b>Subject:</b> [4H] More EHV-1 for horse youth<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Attention counties with 4-H Horse youth:<o:p></o:p></span></p>
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<p style="margin:0in"><span style="color:#212121">***EHV-1 Neuropathogenic/EHM Update***</span><o:p></o:p></p>
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<p style="margin:0in"><span style="color:#212121">The AZDA was notified by the attending veterinarian
</span>Wednesday night<span style="color:#212121"> that two horses from Pinal county displaying neurologic signs tested positive with point of care EHV-1 tests on samples collected that evening. On Thursday, AZDA began reaching out to event organizers requesting
information of attendees / registrants or contact info for messaging. On Friday 1/30/2026, one of the two hospitalized horses was humanely euthanized due to progressive neurologic deterioration. Confirmation of EHV-1 (neuropathogenic) by the reference lab
was reported </span>Friday afternoon<span style="color:#212121">. The events where exposure to the affected horse(s) or dangerous contact (exposed) horses of the affected horses (ie. other horses from the premises of origin of the two clinical horses) are
as follows:</span><o:p></o:p></p>
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<span style="color:#212121">January 18, 2026 – Horseshoe Park Extreme Barrel Race</span><o:p></o:p></p>
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<span style="color:#212121">January 20, 2026 – ICE Wittmann Breakaway Roping</span><o:p></o:p></p>
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<span style="color:#212121">January 21, 2026 – Roper Nation Breakaway Roping</span><o:p></o:p></p>
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<span style="color:#212121">January 21, 2026 – John Volken Academy Ranch</span><o:p></o:p></p>
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<span style="color:#212121">January 23, 2026 – TACC Thunderbird Farms Arena</span><o:p></o:p></p>
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<span style="color:#212121">January 24, 2026 - Horseshoe Park Extreme Barrel Race</span><o:p></o:p></p>
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<span style="color:#212121">January 27, 2026 – TACC Thunderbird Farms Arena </span><o:p></o:p></p>
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<span style="font-size:16.0pt;color:#212121"> </span><o:p></o:p></p>
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<span style="color:#212121">As always, many horses even in a normal population may be completely asymptomatic intermittently shedding herpes virus and a smaller subset of those will be shedding neurotrophic herpes (and still may be asymptomatic). Given the
extensive show history that has already occurred it's difficult to be on the leading edge of this like the horses returning to Arizona from the Waco, TX and Guthrie, OK events at the end of November where quarantine of returning horses was more feasible.
In the current situation the best course of action for your clientele if they have had horses at these historical events would be to encourage rectal temperature monitoring twice daily with logging the results to chart trends, prompt reporting of any signs
consistent with EHV-1 (respiratory or neuro) infection to their attending veterinarian and testing (nasal swab and whole blood PCR) if indicated, and voluntary self-quarantine from attending any new shows for the next 14 days. Additional messaging will be
forthcoming.</span><o:p></o:p></p>
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