The order No. 6326-A/2021 also states that people who are fully vaccinated don’t need to quarantine - but they have to present a proof of complete vaccination done in that country for at least 14 days.
According to the order, the vaccination is considered complete "after taking a single-dose vaccine (for vaccines with a one-dose vaccine schedule); or after second dose of a vaccine against with a two-dose vaccine schedule, even if doses of two different vaccines have been administered; or a single dose of a vaccine against covid-19 with a two-dose vaccination schedule for people who have recovered from the disease - if it is indicated in the vaccination certificate that the vaccination schedule was completed after administration of one dose."
This new travel order, which is applicable for air, land, sea and river arrivals into Portugal, takes effect from 00:00 on 28 June 2021 until 23:59 on 11 July 2021.