You are not required quarantine if you are either vaccinated or have been infected with COVID-19 in the past 14 days - 6 months.
However, you are still required to present a negative RT-PCR test completed within 48 hours before travelling to Romania.
If you do not provide a negative RT-PCR test, completed within 48 hours before travelling to Romania, you will be required to quarantine for 5 days.