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Two vaccine doses offer similar Covid-19 protection as prior infection – study
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Two vaccine doses offer similar Covid-19 protection as prior infection – study
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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.
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.
Rong360 Jianpu Technology (NYSE:JT) Survey: National Average First-home Mortgage Rate Increased by 4BPs Month-on-Month
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