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Jun 13: Requiring the wearing of masks to prevent the spread of the novel coronavirus in areas at the epicenter of the global pandemic may have prevented tens of thousands of infections, a new study suggests.

Mask-wearing is even more important for preventing the virus' spread and the sometimes deadly COVID-19 illness it causes than social distancing and stay-at-home orders, researchers said, in the study published in PNAS: The Proceedings of the National Academy of Sciences of the USA.

Infection trends shifted dramatically when mask-wearing rules were implemented on April 6 in northern Italy and April 17 in New York City - at the time among the hardest hit areas of the world by the health crisis - the study found.

"This protective measure alone significantly reduced the number of infections, that is, by over 78,000 in Italy from April 6 to May 9 and over 66,000 in New York City from April 17 to May 9," researchers calculated.

When mask-wearing went into effect in New York, the daily new infection rate fell by about 3% per day, researchers said. In the rest of the country, daily new infections continued to increase.

Direct contact precautions - social distancing, quarantine and isolation, and hand sanitizing - were all in place before mask-wearing rules went into effect in Italy and New York City. But they only help minimize virus transmission by direct contact, while face covering helps prevent airborne transmission, the researchers say.

"The unique function of face covering to block atomization and inhalation of virus-bearing aerosols accounts for the significantly reduced infections," they said. That would indicate "that airborne transmission of COVID-19 represents the dominant route for infection."

The U.S. Center for Disease Control and Prevention on Friday urged organizers of large gatherings that involve "shouting, chanting or singing to strongly encourage the use of cloth face coverings to lower the risk of spreading the coronavirus."

Dubai, Mar 23: The United Arab Emirates announced on Monday it will temporarily suspend all passenger and transit flights amid the novel coronavirus outbreak.

The Emirati authorities "have decided to suspend all inbound and outbound passenger flights and the transit of airline passengers in the UAE for two weeks as part of the precautionary measures taken to curb the spread of the COVID-19", reported the official state news agency, WAM.

It said the decision -- which is subject to review in two weeks -- will take effect in 48 hours, adding: "Cargo and emergency evacuation flights would be exempt."

The UAE, whose international airports in Abu Dhabi and Dubai are major hubs, announced on Friday its first two deaths from the COVID-19 disease, having reported more than 150 cases so far.

Monday's announcement came hours after Dubai carrier Emirates announced it would suspend all passenger flights by March 25.

But the aviation giant then reversed its decision, saying it "received requests from governments and customers to support the repatriation of travellers" and will continue to operate passenger flights to 13 destinations.

Emirates had said it will continue to fly to the United Kingdom, Switzerland, Hong Kong, Thailand, Malaysia, the Philippines, Japan, Singapore, South Korea, Australia, South Africa, the United States and Canada.

"We continue to watch the situation closely, and as soon as things allow, we will reinstate our services," said the airline's chairman and CEO, Sheikh Ahmed bin Saeed Al-Maktoum.

Gulf countries have imposed various restrictions to combat the spread of the novel coronavirus pandemic, particularly in the air transport sector.

The UAE has stopped granting visas on arrival and forbidden foreigners who are legal residents but are outside the country from returning.