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International horse movements play role in spread of strangles, researchers find


Horsetalk.co.nz
International horse movements play role in spread of strangles, researchers find
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A two-year-old Shetland pony with strangles. His first symptom was a runny nose. He then developed a fever, and swelling to the right side of his face. This is a side view before the abscesses burst. ©AkaEmma, Public domain, via Wikimedia Commons
The latest DNA sequencing techniques have been used to track the bacteria responsible for strangles in horses around the world, in the largest study of its kind into the pathogen.
Researchers said they identified many examples of closely related strains of 
Streptococcu equi in geographically distant nations, highlighting that the lack of pre-export testing, used routinely for many animal diseases, facilitates what they describe as the unbridled international transmission of the bacterium. ....

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Study highlights 'unbridled globetrotting' of the strangles pathogen in horses – India Education,Education News India,Education News


Strangles, caused by the bacteria 
Streptococcus equi, is the most frequently diagnosed infectious disease of horses, with 600 outbreaks estimated to occur in the United Kingdom each year.
Streptococcus equi invades the lymph nodes of head and neck of horses, causing them to swell and form abscesses that can, in around 2% of cases, literally strangle the horse to death. Some of the horses that recover from strangles remain persistently infected. These apparently healthy animals shed bacteria into the environment and spread the disease to other horses that they come into contact with.
Using standard diagnostic testing, the 
Streptococcus equi strains look almost identical. But by carefully examining the DNA of the bacteria, the team were able to track different variants as they spread across the world. ....

United Arab Emirates , United States , Basse Normandie , United Kingdom , New Zealand , Region Flamande , Uppsala Lan , Baja California , Bet Dagan , Ar Riya , Saudi Arabia , Buenos Aires , Distrito Federal , Clinica Equina , Andrew Waller , Julian Parkhill , O Frank Duncombe , Matthew Holden , Luniversidad Complutense , Nuffield Department Of Medicine , University Of Camerino , Irish Equine Centre , Institute Of Veterinary Medicine , University College Dublin , University Of St Andrews , University Of Cambridge ,