Strangles in Two Florida Counties
A horse in Sarasota County, Florida, has tested positive for strangles, and a horse in Palm Beach County is suspected positive.
A horse in Sarasota County, Florida, has tested positive for strangles, and a horse in Palm Beach County is suspected positive.  

The fourth case of strangles in Florida for 2023 has been confirmed in Sarasota County. A Miniature Horse developed symptoms on December 26, including dyspnea, bilateral guttural pouch empyema and fever. The horse tested positive on January 5. It is now recovering.

There is also another suspected case of strangles in Palm Beach County. One horse was exposed to a previously confirmed case. An official quarantine has been placed on the property, where five additional horses are exposed, while laboratory confirmation is pending.

EDCC Health Watch is an Equine Network marketing program that utilizes information from the Equine Disease Communication Center (EDCC) to create and disseminate verified equine disease reports. The EDCC is an independent nonprofit organization that is supported by industry donations in order to provide open access to infectious disease information.

About Strangles

Strangles in horses is an infection caused by Streptococcus equi subspecies equi and spread through direct contact with other equids or contaminated surfaces. Horses that aren’t showing clinical signs can harbor and spread the bacteria, and recovered horses remain contagious for at least six weeks, with the potential to cause outbreaks long-term.

Infected horses can exhibit a variety of clinical signs:

  • Fever
  • Swollen and/or abscessed lymph nodes
  • Nasal discharge
  • Coughing or wheezing
  • Muscle swelling
  • Difficulty swallowing

Veterinarians diagnose horses using polymerase chain reaction (PCR) testing with either a nasal swab, wash, or an abscess sample, and they treat most cases based on clinical signs, implementing antibiotics for severe cases. Overuse of antibiotics can prevent an infected horse from developing immunity. Most horses make a full recovery in three to four weeks.

A vaccine is available but not always effective. Biosecurity measures of quarantining new horses at a facility and maintaining high standards of hygiene and disinfecting surfaces can help lower the risk of outbreak or contain one when it occurs.

Brought to you by Boehringer Ingelheim, The Art of the Horse

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