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From Thoi Loi Mountain, travelers get a panoramic view of Ly Son Island in Quang Ngai Province, central Vietnam. Photo by VnExpress/Hachi8.

The move issued by authorities of Quang Ngai Province is aimed to deal with the spread of Covid 19.

Foreigners who are in Ly Son are encouraged to return to the mainland early.

Provincial authorities have also instructed to ensure the food supply for local people's demand.

To date, Vietnam has confirmed the 30th Covid-19 patient, including 16 who were discharged from hospital following their full recovery.

On Sunday, over 200 Vietnamese and four foreign tourists, including two Americans, one from Canada and one from Italy, were on the island. They left on Monday following the central province's decision.

The recent number of visitors to the island only hit 150 to 200 a day, compared to 1,500 to 3,000 during this time in previous years, official data shows.

Ly Son is 30 km from the shore and has an area of nearly 10 square kilometers. Formed by five mountains, four of which are dormant volcanoes, it is a combination of three islands including Dao

The island district, which used to be off the beaten tourism track, has become increasingly popular among both domestic and foreign visitors in recent years.Lon (Big Island), Dao Be (Small Island) and Mu Cu Islet.

Last year, Ly Son received over 230,000 tourists, a 30 percent year-on-year increase, raking in VND276 billion ($12 million) in tourism revenues.

The latest confirmed Covid-19 case in Vietnam is a 66-year-old British woman who has been quarantined in the central town of Hue since Saturday. She is in stable health with no fever or cough.

Earlier, eight foreigners were confirmed to have contracted the coronavirus. They were touring Vietnam when they were tracked down by local authorities on being informed that they were passengers on the same flight as Nguyen Hong Nhung, who tested Covid-19 positive Friday.

Four were intercepted in Quang Ninh Province, two in Lao Cai Province in northern Vietnam and two in the central city of Da Nang, which neighbors Quang Ngai, home to Ly Son Island.

The Covid-19 outbreak has thus far spread to 104 countries and territories around the world, with the death toll climbing to 3,806.

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