Impfungen - unnötig oder unbedingt notwendig?
28.04.2019 um 17:00Optimist schrieb:Mir gings nur darum, dass das mit den 50% so nicht ganz stimmt - man sollte eben - wenn es hier um Wissenschaftliches geht, bei der Wahrheit bleibenDass die Todesrate bei Masern und anderen "Kinderkrankheiten" verhältnismäßig gering ist, liegt im Wesentlichen daran, dass Europäer den Krankheiten so lange ausgesetzt waren, dass durch evolutionäre Selektion (= die Schwachen verrecken) eine gewisse Grundresistenz vorhanden war. Bei den Eingeborenen der neuen Welt war das nicht der Fall - dementsprechend haben verschiedene europäische Krankheiten nach dem Erstkontakt dort innerhalb von ca. 50 Jahren 90% der Bevölkerung vernichtet:
Wikipedia: Native American disease and epidemics
The significant toll that this took is expounded upon in the article Population history of indigenous peoples of the Americas. A specific example was Cortes' invasion of Mexico. Before his arrival, the Mexican population is estimated to have been around 25 to 30 million. Fifty years later, the Mexican population was reduced to 3 million, mainly by infectious disease. This shows the main effect of the arrival of Europeans in the new world. With no natural immunity against these pathogens, Native Americans died in huge numbers. Yale historian David Brion Davis describes this as "the greatest genocide in the history of man. Yet it's increasingly clear that most of the carnage had nothing to do with European barbarism. The worst of the suffering was caused not by swords or guns but by germs."[10] By 1700, less than five thousand Native Americans remained in the southeastern coastal region.[4] In Florida alone, there were seven hundred thousand Native Americans in 1520, but by 1700 the number was around 2000.[4] In summer 1639, a smallpox epidemic struck the Huron natives in the St. Lawrence and Great Lakes regions. The disease had reached the Huron tribes through traders returning from Québec and remained in the region throughout the winter. When the epidemic was over, the Huron population had been reduced to roughly 9000 people, about half of what it had been before 1634.[11] The Iroquois people faced similar losses.[4]