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Also reported in: titer
No significant antibodies against Streptococcus equi subsp. equi (the bacterium that causes strangles) were detected. This makes recent or active infection unlikely. Negative a blood antibody test is also useful to confirm a horse is a non-carrier before introducing to a new herd or before an event.
No significant antibodies against Streptococcus equi subsp. equi (the bacterium that causes strangles) were detected. This makes recent or active infection unlikely. Negative a blood antibody test is also useful to confirm a horse is a non-carrier before introducing to a new herd or before an event.
No action needed. Strangles vaccination is available but has variable efficacy and can cause false-positive a blood antibody test. Practice good biosecurity, especially when introducing new horses.
Equine Strangles serology: NEGATIVE (0)Antibodies against Streptococcus equi were detected. This can indicate recent infection, current infection, or persistent carrier status (guttural pouch infection). Strangles is a highly contagious bacterial disease characterized by fever, nasal discharge, and abscessation of the submandibular and retropharyngeal lymph nodes. The abscesses can become very large and may rupture externally, discharging thick pus. Complications include bastard strangles (metastatic abscesses), purpura hemorrhagica (immune-mediated vasculitis), and guttural pouch empyema.
If your horse has active clinical signs (fever, nasal discharge, swollen lymph nodes), immediate isolation is critical. Strangles is highly contagious via direct contact and contaminated equipment. Treatment typically involves hot-packing lymph nodes, draining abscesses, and NSAIDs. Antibiotics are controversial — they can delay abscess maturation and are generally reserved for noticeable cases or to prevent complications in high-risk patients. Guttural pouch endoscopy may be recommended to identify carriers. PCR testing of guttural pouch lavage or nasal swabs can confirm active shedding. Carrier horses with guttural pouch empyema may require repeated lavage or surgical intervention.
Equine Strangles serology: POSITIVE (1)Upload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.