Gerry Horkan (Fianna Fail) | Oireachtas source

Someone may have asked my next question but I did not hear the answer to it. I am not even sure if this exact question was asked. If someone flies over for the day to a Liverpool or Manchester United match, gets an antigen test before going and then mingles with 50,000 people in a stadium before returning, is the test he or she got before leaving valid?