All passengers must fill in the online passenger locator form found at this link before your arrival in the country even if you have been vaccinated. The form may be filled in up to 180 days before arrival in Belgium. Paper copies will not be accepted.
As from the 4th December 2021, a vaccination or recovery certificate is required to avoid any further quarantine or test requirement. Otherwise a negative PCR test not older than 72 hours prior arrival or a negative rapid test result 24 hours before arrival is required. In the absence of such tests passengers are required to get tested on Day 1 or Day 2 after their entry. A negative result ends quarantine. A further test would be required on Day 7.
Children under the age of 12 do not have to get tested, but will be quarantined when the parents are tested, pending the test result.
Passengers in possession of a negative pre-departure test are not required to do a test on Day 1 or 2 but will need to get tested on Day 7.
All travellers without a vaccine or recovery certificate living or staying in Brussels need to get tested on Day 1 and Day 7 and remain in quarantine until the result of the second test is known.