Ask the Infectious Disease Expert

Equine herpesvirus, particularly the neurologic form, equine influenza, strangles, and vesicular or reportable diseases commonly trigger isolation, movement restriction, and notification protocols. Requirements vary by jurisdiction.

PCR on nasopharyngeal swabs or blood is standard for many respiratory pathogens, with sample type and timing relative to clinical signs strongly affecting sensitivity. Serology, culture, and guttural pouch sampling have specific roles, particularly for strangles carriers.

Effective isolation includes physical separation with adequate distance or barriers, dedicated equipment and personnel or a strict last-in-order workflow, controlled traffic, protective clothing, hand hygiene, and documented cleaning and disinfection with a product appropriate to the pathogen.

Duration depends on the pathogen, testing results, and regulatory guidance. Restrictions are commonly maintained until a defined period passes with no new fevers or clinical cases and confirmatory testing is complete.

Vaccination reduces the severity and shedding of many infectious diseases without guaranteeing prevention. Core and risk-based vaccination schedules should be tailored to the horse's travel, competition, and exposure profile.

Fever frequently precedes other clinical signs and shedding for several respiratory pathogens. Twice-daily temperature monitoring during and after an outbreak is one of the earliest and lowest-cost detection tools available to a facility.