Exit strategy, the end of the corona crisis, after the big bang in the USA, that is to say several hundred thousand virus deaths, the worst should be over. The peak in the USA is expected around Easter. This is rather optimistic, I fear that the corona crisis will continue in the USA until the end of April. Fortunately, certain measures taken in various countries (South Korea, China, etc.) have enabled an R 1 or even 0.5 to be achieved. This figure means that one person will only infect one more person. In the beginning there were up to 7 infected persons. Consequently, the number of infected persons remains stable or decreases slightly. The health care system is thus at the edge of its capacity but there is a glimmer of hope on the horiz...