There was the self isolation for 7 days for anyone who entered to South Korea from overseas. As Omicron spreading more than 200,000 people a day, Korea Government and Health department have decided to remove the policy to self isolation from 1st of April. Even if you are vaccinated or not, you do not need to do self isolation in Korea. But from 21st of March, if you are fully vaccinated, the isolation in Korea will be exempted as follow the new rule of quarantine in Korea. for more details will be uploaded soon.