Vesicular stomatitis outbreak hits Arizona

Lainie Kringen-Scholtz
Nov 13, 2025
Nov 13, 2025

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As we continue to monitor the New World screwworm, another reportable disease has surfaced. On Oct. 31, the National Veterinary Services Laboratories in Ames, Iowa confirmed vesicular stomatitis virus (VSV) in two horses from Arizona. I have many clients that are headed to Arizona this month for the winter season and have been getting a lot of questions, so here’s the 101.

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Lainie Kringen-Scholtz, DVM, is veterinarian and owner of True North Veterinary Health in Wentworth, S.D. Reach her at truenorthveterinaryhealth@gmail.com or PO Box 117, Wentworth, SD 57075.