Vinalspin unfortunately that appears to be untrue, evidence from South Korea appears to show that you can indeed catch it again with patient’s who had it, getting it again within weeks. Also evidence shows wearing a mask does help but the need for front line NHS staff to get a constant supply has resulted in the general public being told a mask is of no use.
@brydo, yet again a bit of media hype, if it is possible to catch it again it would be extremely rare as you would still have antibodies flooding your system to fight it immediately.