Tadhg Beirne admits overcoming self-isolation was mental challenge Tadhg Beirne has spoken of the challenges of self-isolating (Andrew Milligan/PA) Tadhg Beirne admits being forced to self-isolate created a mental challenge as the British and Irish Lions emerged undeterred from one of the most chaotic weeks in their history. Beirne was among the large group of personnel who were forced to quarantine in the rooms of their Johannesburg hotel on Wednesday following two positive tests for coronavirus. Forty-eight hours later the close contacts of the player who subsequently produced two negative results were able to rejoin the rest of the touring party.