For the first time Japanese scientists discovered
1997 the TT virus in the blood of a patient. That so far still no
group of viruses assigned representatives seems to be far common:
According to first studies carry alone in Japan 90% of all
humans for the small unknown quantities in itself. Also the
Europeans did not remain exempted from him. According to newest
investigations are for instance a third of the German blood donors
with TTV infected. How dangerous they are, remains undecided.
Because serious illnesses with a third of the population would
finally be noticeable, said the Virologe Gregor Caspari of the
virologischen institute in pouring. The history of the viruses
goes back far.
When Christoph Kolumbus 1492
landed in Haiti, brought he and its Man smallpox exciters into the Karibikinsel. The invaders were
immune because they -
usually already in the infancy - had already gone through the
infection. The natives however, the Caraieben,hasn't and did
die almost all whenever contact with the viruses. Haiti - at that time " Hispaniola " - fell the Spaniards into the lap.
Not differently in the
middle 16. Century, as which Spanish conquerer in the Inka realm,
which is today's Peru, again support of smallpox viruses: A
majority of the indianischen population, including the emperor,
fell the epidemic to the victim. The Spaniards under Pizarro
subjected the weakened and people without difficulties.
Still today go over half of
all illnesses of humans world-wide on the account of the invisible
exciters. Not only with masers, wind smallpox or rabies - viruses
are involved also in the emergence of complex disease pictures. In the western world each tenth malicious tumor is along-caused by
virus infections. Above all genetic and environmental factors play
a role with cancer, for some types of cancer scientist proved
a virus connection.
The hepatitis b virus is
identified to Papillom viruses as trips of liver cancer, is
considerably involved in the emergence of cervix cancer and other
genital tumors. Also with the main cause of death in the
industrialized countries viruses seem to participate: banal Adeno
viruses, as cold trip constant guests in the human breath ways,
and Entero viruses, which are to be found frequently in the
digestive tract. then epidemiologists in extensive studies proved,
increase an infection with Entero viruses the risk for cardiac
Viruses create even the
branch over the type boundary and spread thus from the animal
realm also among humans. Most prominent example: the humane immune
weakness virus (HIV). not least the world-wide tourism ensures for
the fact that " new viruses ", how they are sometimes called
spread fast over all continents.
The tourism has boomt - the
viruses travels also around the world. The CO existence of humans
and their cell parasites goes year by year into a new round. And
nevertheless the viruses have friends. Professor Ernst-Ludwig
Winnacker is even supportless inspired of the tiny exciters. " I
like viruses " wanted the prominent German biochemist in the
passed year in its book to the topic to call. Only after the
objection of the publishing house, which appeared too zynisch this
title, the president of the German research council decided for "
secret rulers ".