There are 6 steps to a formal mediation; 1) introductory remarks, 2) statement of the problem by the parties, 3) information gathering time, 4) identification of the problems, 5) bargaining and generating options, and 6) reaching an agreement
Once you get chickenpox, then only after a long period you will get it again. this is because your immune system knows how to respond to the pathogen the second time. so even though you get it, it won't as severe as the first time.