Risk Factors and Long-Term Outcomes in Horses After the 2021 Outbreak of Equine Herpesvirus 1 Myeloencephalopathy, Valencia, Spain.

ABSTRACT:

Background

Equine herpesvirus myeloencephalopathy (EHM) is a persistent threat to horses, with unclear risk factors and disease severity.

Objectives

To evaluate risk factors, effective reproduction rate (Rt), and long-term athletic outcomes of an EHM outbreak.

Methods

Retrospective study of the 2021 EHM outbreak in Valencia, Spain, examining associations between risk factors (sex, age, breed, country of origin, and vaccination status) and case fatality rate, EHM development, and odds of returning to competition using odds ratios [95% CI] and Rt via the Robert Kochs Institute method.

Results

Among 191 horses, 38 (20%) were clinically normal, 13 (7%) were subclinical, and 140 (73%) presented clinical signs (89 EHM, 64%). One hundred sixty horses were isolated at

SUBMITTER: de la Cuesta-Torrado M 

PROVIDER: S-EPMC11888933 | biostudies-literature | 2025 Mar-Apr

REPOSITORIES: biostudies-literature