Friday, August 22, 2014   

Saudi camel virus found in humans, killer bug detected in secretions and blood
(02-25 13:52)

A killer respiratory virus spreading in the Middle East, is widespread in camels and may be jumping directly to humans, a study has found.
The Middle East Respiratory Syndrome, or MERS, the virus has killed 79 of the 182 people infected since September 2012, according to the World Health Organization.
Senior study author Ian Lipkin of Columbia University said the virus is “extraordinarily common'' in camels and has been for at least 20 years.
“In some parts of Saudi Arabia, two-thirds of young animals have infectious virus in their respiratory tracts,'' he told AFP.
“It is plausible that camels could be a major source of infection for humans.''
Lipkin worked with colleagues at the US National Institute of Allergy and Infectious Diseases and lead author Abdulaziz Alagaili of King Saud University in Riyadh on the study, published in the journal mBio on February 25.
Researchers took blood samples as well as rectal and nasal swabs from more than 200 camels in Saudi Arabia in November and December of 2013.
They found antibodies for MERS as well as active virus, particularly in the nasal secretions of younger camels.
“Overall, 74 percent of camels sampled countrywide had antibodies to MERS-CoV [coronavirus],'' said the study.
The team also analyzed archives of blood samples from dromedary camels – the most common species – taken from 1992 to 2010, and found evidence of MERS going back two decades.
“The virus that has been identified in these camels is identical to the virus that has been found in humans with disease,'' Lipkin said.
If confirmed, MERS would not be the only disease known to pass from camels to humans, but such cases are rare. One other is Rift Valley fever, which can cause fever and flu-like symptoms in people.
Camels that tested positive for the virus appeared to be in otherwise good health.
Most of the human infections of MERS have been in Saudi Arabia, with others scattered across Jordan, Qatar, Tunisia, and the United Arab Emirates.
Some cases have also been reported in France, Germany, Italy and Britain, but all have had some links to travel in the Middle East.
Researchers now think close contact with camels, which are known to be slobbery creatures, could be how the virus is transmitted.
“People race them, people keep them as pets,'' said Lipkin.
“And they also eat camels, so there are many opportunities for exchange of material between camels and people.''
   
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