Talking about the European Region does not mean speaking of a homogeneous situation, also from the point of view of health. To realize how complex and articulated the European scenario is, just think that in Ukraine, Romania, Moldova and Turkey twice as many children die before the age of five if the figures are compared with so-called industrialized countries. Not to mention the infectious diseases, the use of alcohol and tobacco, which reflect a Europe still deeply layered and with several countries still extremely dependent on their history.
Do you remember A Sound of Thunder, a short story by Ray Bradbury published in 1952? During a time travel's safari, the unintentional killing of a butterfly causes several changes at present-days. In chaos theory, the butterfly effect is a phenomenon whereby a minor change in circumstances can cause a large change in outcome. Today, after many years, we could probably speak about the Twitterfly effect.