Dromedary camels could be responsible for passing to humans the deadly Mers coronavirus that emerged last year, research suggests.
Tests have shown the Mers (Middle East Respiratory Syndrome) virus, or one that is very closely related, has been circulating in the animals, offering a potential route for the spread.
The study is published in the journal Lancet Infectious Diseases.
But the scientists say more research is needed to confirm the findings.
The Mers coronavirus first emerged in the Middle East last year. So far, there have been 94 confirmed cases and 46 deaths.