Equine · Infectious Disease · Infectious Disease
Infectious Disease — Equine
High-yield infectious disease presentations in equine cases, drilled with NAVLE-style vignettes.
Streptococcus equi persists in the guttural pouches, often with chondroids, and intermittent shedding makes single nasal swabs unreliable. Guttural pouch endoscopy and lavage PCR/culture is the standard for carrier detection and outbreak closure. Potomac horse fever is caused by the intracellular organism Neorickettsia risticii; intravenous oxytetracycline early in disease is the treatment of choice, with aggressive supportive care and laminitis prevention.