My 4 year-old DS has had chicken pox. He's well over it but he's still a bit scabby. Today we noticed one of the spots on his hand was infected - it has come up into a lump with about a 10p size patch of red around it and a white head. We managed to get rid of the puss and put germolene on it. However, this afternoon he's started feeling poorly, just wanting to be in bed and very listless. I've just taken his temperature and it's 39.1. Do you think it could be connected to the infected spot? Do you think I should take him to A&E in case of some sort of serious infection?