The attending veterinarian in Dane County, Wisconsin, has confirmed that one horse has tested positive for strangles and is currently under quarantine.
EDCC Health Watch is a marketing program by Equine Network that uses information from the Equine Disease Communication Center (EDCC) to produce and distribute verified equine disease reports. The EDCC is a nonprofit organization supported by industry donations to offer open access to infectious disease information.
About Strangles
Strangles in horses is caused by Streptococcus equi subspecies equi and is spread through direct contact with other equids or contaminated surfaces. Horses without clinical signs can carry and transmit the bacteria, and recovered horses can remain contagious for up to six weeks, potentially leading to long-term outbreaks.
Symptoms of strangles in infected horses may include:
- Fever
- Swollen and/or abscessed lymph nodes
- Nasal discharge
- Coughing or wheezing
- Muscle swelling
- Difficulty swallowing
Diagnosis of strangles in horses is typically done through polymerase chain reaction (PCR) testing using a nasal swab, wash, or abscess sample. Treatment is usually based on clinical signs, with antibiotics prescribed for severe cases. Overuse of antibiotics can hinder the development of immunity in infected horses. Most horses recover fully within three to four weeks.
While a vaccine is available, its effectiveness can vary. Implementing biosecurity measures such as quarantining new horses and maintaining high levels of hygiene and surface disinfection can help reduce the risk of an outbreak or contain one if it occurs.