Southeast Asian countries are easing coronavirus travel restrictions to support their economies.
Vietnam has reopened its borders to all international travelers, including tourists. It also resumed its visa-free policy for citizens of 13 countries, including Japan.
From Wednesday, people arriving in Vietnam are no longer required to self-quarantine if they can show negative test results.
Scores of people traveling to Vietnam could be seen at a Singapore airport, where airline staff were handing out gifts to passengers.
On March 8, Indonesia shortened the required quarantine period on arrival to 24 hours for travelers who received two or more doses of a COVID-19 vaccine.
The Indonesian government plans to lift quarantine for vaccinated travelers from April 1. He will make a decision after assessing the situation in some resort islands, including Bali, where travelers are already allowed to enter without quarantine.
The Malaysian government also plans to lift quarantine for fully vaccinated travelers from April 1.
Thailand and Cambodia have already stopped requiring quarantine for fully vaccinated international travelers.