Greenland Contagion [...]

Sometimes, suicides can start chain reactions. Psychologists call it the contagion effect or suicidal transmission — after a close family member or friend kills himself, people who are already having suicidal thoughts are at greater risk for suicide. For that reason, suicide clusters or waves are especially likely in small, isolated communities where everyone knows each other. In one study from Greenland, 60 percent of young people who killed themselves did so within four months of another suicide in the same district. (Source)