Major concerts and events in the United Arab Emirates, an air transit centre as well as a tourism and business hub, have been cancelled or postponed as the coronavirus spreads in the Gulf.

There have been at least 1,641 cases of the virus in the Gulf region, mostly in Iran where 66 people have died. Cases have also been reported in other Middle East nations.

The March 5-6 electronic music Ultra festival at Abu Dhabi's 25,000-capacity Du arena and the March 21 K-pop concert Music Bank at Dubai's 17,000-capacity Coca Cola Arena have been cancelled.

Organisers of Ultra, where electronic group Major Lazer and DJ Afrojack were to perform, cited travel restrictions imposed by some countries and airlines due to the rapidly-spreading virus.

South Korea's national broadcaster KBS and crowdfunding platform Makestar, organisers of the K-pop concert, said Music Bank was cancelled because of the spread of the epidemic in South Korea and elsewhere.

Dubai's flagship international art fair "Art Dubai", which was scheduled to be held from March 25-28, has also been postponed, organisers said.

The UAE, which has reported 21 cases of coronavirus, regularly hosts major conferences, concerts and sporting events, a significant draw-card for foreign visitors.

The UAE central bank will reassess its forecast for economic growth in 2020 due to the coronavirus outbreak, an official said on Tuesday.

A women's forum and yoga festival in Abu Dhabi and a carnival in Dubai for the Hindu holi festival, all in March, have also been cancelled or rescheduled.

Meanwhile, American rapper and producer Russ said his March 27 concert in Dubai will now take place in November because of the virus.

"I know, wild lol (laugh out loud) but outta my control," he said on Twitter.

Dubai has postponed its March boat show until November and Abu Dhabi postponed the ITU World Triathlon event this month, after earlier cancelling a cycling event in which two riders were diagnosed with the virus.

Elsewhere in the Gulf, Qatar has cancelled a defence exhibition and Bahrain has postponed two oil and gas conferences that had been scheduled to take place this month.