Mr. Ivan Bassato:

It is a rapid antigen test. It also provides a quantitative indication of the viral load, the so-called cut-off index. If the result of the antigen test is positive, it is mandatory to further investigate the case and a second swab is done at the airport. Passengers who return a positive result on the antigen test are mandated to isolate at their homes if they are resident in the area or they are taken to a Covid hotel to await the result of the PCR test done on the second swab the day after. Normally, the result comes within 36 hours, so the real status of the person is known and proper medical decisions are taken accordingly.