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MERS virus widespread in Saudi Arabian camels
Date:2/24/2014

The coronavirus responsible for Middle East Respiratory Syndrome (MERS) is prevalent in camels throughout Saudi Arabia and has been around for at least 20 years, according to a study to be published on February 25 in mBio, the online open-access journal of the American Society for Microbiology.

"Our study shows the MERS coronavirus (MERS-CoV) is widespread," says senior study author W. Ian Lipkin of Columbia University, New York. "Adult camels were more likely to have antibodies to the virus while juveniles were more likely to have active virus. This indicates that infection in camels typically occurs in early life, and that if people get the virus from camels the most likely source is young camels."

MERS, a serious viral respiratory illness, has been identified in 182 people from 2012 through Feb. 7, according to the World Health Organization; 79 people have died from the condition. While most infections have occurred in Saudi Arabia, the origin of disease, in most cases, has remained unknown. Efforts to identify an animal source of infection have focused on bats and camels. The first known case of MERS was in a Saudi Arabian man who had four pet camels.

In the study, investigators from the United States and Saudi Arabia conducted a comprehensive survey of dromedary camels throughout Saudi Arabia. They collected blood samples and rectal and nasal swabs from camels, sheep and goats in November and December of 2013. Using mobile laboratory equipment, they tested blood samples for antibodies reactive with MERS-CoV, and the swabs and blood for active virus. They also analyzed archived blood samples from dromedary camels taken from 1992 through 2010.

Overall, 74% of camels sampled countrywide had antibodies to MERS-CoV. More than 80% of adult camels throughout the country had antibodies to the virus, while in camels age two or younger the prevalence ranged from 90% in the east to 5% in the southwest. Antibodies to the vi
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Contact: Jim Sliwa
jsliwa@asmusa.org
202-942-9297
American Society for Microbiology
Source:Eurekalert

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