A patient is in intensive care at the Queen Elizabeth Hospital in Birmingham after catching a potentially fatal virus, similar to the respiratory disease Sars (severe acute respiratory syndrome).
The novel coronavirus bug is like pneumonia but can also cause kidney failure.
The patient is thought to have caught it from a relative who had travelled to the Middle East and Pakistan.
Only 11 people in the world have caught the bug, but five of those have died.
The patient, who has not been identified, is in a critical condition.