What causes Streptococcus equi?
Streptococcus equi causes the disease known as “strangles” in horses. It affects primarily younger horses but may affect older horses that are immunologically naive. S. equi infection is transmitted by direct contact or via fomites such as water troughs, feed bunks, pastures, and stalls.
What causes bastard strangles?
Strangles is an infection caused by bacteria called Streptococcus equi. It is highly contagious and the infection can be spread by horse-to-horse contact or by humans, tack, drinking troughs and other environmental factors.
What pathogenic organism causes strangles in horses?
Strangles is a disease caused by a bacteria called Streptococcus equi that can be easily spread directly through horse to horse contact and indirectly through contaminated equipment, handler clothing and boots etc.
What is Streptococcus equi Ruminatorum?
Streptococcus equi subsp. ruminatorum is a group C Streptococcus subspecies first identified in 2004. The first case of human infection with this agent was reported in 2007. Here, we report a second case. A 70-year-old man had acute spondylodiscitis and endocarditis involving the anterior mitral valve leaflet.
What are the symptoms of Streptococcus equi?
Classic clinical signs include a fever (often >103°F or >39.5°C) first, followed by one or more of the following symptoms: Lethargy/lack of interest in normal activities. Thick white to yellow nasal discharge. Swelling under the jaw and/or in the throat latch region (from the infected lymph nodes)
What is the difference between strangles and bastard strangles?
Metastatic strangles (sometimes called “bastard strangles”) is a condition in which lymph nodes in other parts of the body, such as the abdomen and chest, are affected. The diagnosis of strangles is confirmed by bacterial culture of secretions from abscesses or nasal swab samples.
Is Streptococcus equi zoonotic?
Streptococcus equi subspecies zooepidemicus (S. zooepidemicus) is a zoonotic pathogen for persons in contact with horses.
What shape do Streptococcus equi bacteria have?
S. equi is a gram positive bacterium of the Lancefield’s group C. It grows in long chains of irregularly shaped cocci that are non-motile, encapsulated, facultative.
Is Streptococcus equi aerobic?
General Information. Diagnostic testing to detect shedding of the bacteria which causes Strangles in horses, Streptococcus equi, currently includes bacterial isolation by aerobic culture and subsequent biochemical identification, and bacterial DNA detection by the polymerase chain reaction (PCR) test.
How do you prevent Streptococcus equi in horses?
Perform twice daily monitoring of rectal temperatures of all horses in an outbreak to identify new cases. Stop all movement of horses to and from the farm when strangles is identified. Disinfect water buckets daily. Use strict hygiene between horses to reduce spread of the disease.
How is strep zoo transmitted?
zooepidemicus. Human infection with S. zooepidemicus is rare but is often related to contact with infected horses. Human infection is also linked to contact with other infected animals including: dogs, monkeys, domestic ruminants, pigs, and with ingestion of unpasteurized dairy products.
Is Streptococcus equi a bacteria?
cause of strangles >Streptococcus equi, a bacterium that invades nasal and throat passages and forms abscesses in lymph nodes and other parts of the body. It is also called distemper of horses. Young horses are most susceptible to it, and outbreaks of the disease usually occur where a…
What causes strangles in horses?
Though most cases of strangles, caused by Streptococcus equi equi, resolve without major complication, some can have severe effects Strangles, caused by Streptococcus equi subspecies equi ( S. equi ), is frequently seen within the equine population, affecting horses of all ages.
What is the incubation period for strangles?
The incubation period for strangles is 3 to 8 days, at which point clinical signs, including lethargy, anorexia, fever, nasal discharge, and swollen lymph nodes with abscess formation may appear.
What are the possible complications of Staphylococcus equi infection?
Complications seen with S. equi infections can be as high as 20 percent (Ford and Lokai, 1980) and can include bastard strangles, purpura haemorrhagica, myositis, muscle infarctions, myocarditis and severe respiratory distress and mortality.
How long does it take for Strangles to go away?
The prognosis for full recovery of uncomplicated cases of strangles is good, but usually takes 3 to 6 weeks. Approximately 70-75% of infected horses go on to develop an immunity to S. equithat can last for at least five years. How can strangles be prevented?