A second case of infection by the MERS coronavirus has been detected in the United States. No details have been released about the victim apart from the fact that the woman arrived from Jeddah in Saudi Arabia via Heathrow airport in London.
Since the MERS virus broke out in 2012 it has killed over 150 people around the world, with most of the victims in Saudi Arabia.
Medical specialists believe the disease is spread by camels, even though this theory is unsupported by any conclusive evidence.
MERS attacks the lungs, and the resulting infection leads to fever, a cough, and breathing difficulties.
For the moment there is no vaccine against the virus.
The World Health Organisation has called an emergency meeting on MERS for this Tuesday in Geneva.