Three Gulf Arab states recorded their first new coronavirus cases this week.
The UAE on Tuesday also suspended flights to Iran and Thailand, where an outbreak of the deadly virus has been reported.
Avoid visiting areas and locations where cases were detected.
All patients are under isolation and are receiving treatment from a specialised team.
Confusion about terminology arises after WHO says coronavirus could develop to a larger scale.
The ministry also urged all returning citizens and residents to self-isolate immediately.
The authorities have closed schools, universities, cultural centres, sporting events.
The UAE has reported 13 people have been diagnosed with the infection.