It would appear that the UAE has, for all intents and purposes, shut its borders to all those arriving who are not citizens or residents.
The ability to obtain a visa on arrival has been suspended and the local press has also reported that they have cancelled all visas for those that have not initially entered the country yet.
Gulf News - Coronavirus: UAE cancels all pre-approved visas
This seems to be a marked escalation in countermeasures. Whilst the majority of our passengers at EK are transiting and appear to be unaffected, the wider ramifications of effectively isolating the country and especially Dubai, must present a even greater challenge to the local economy.