Viruses haven't wiped out the human population due to many people being able to take enough precautions to avoid it all together. Other people are immune to certain viruses that might prove fatal to others. Also, vaccines have been created to reduce deaths among illneses such a the cold virus, flu, fever, etc.
So:
-taking precautions to avoid the virus
-Being immune
-Vaccines
are just a few answers to why the human population hasn't been wiped out by viruses.
Oh, and because we reproduce rather frequently.
No one knows but some scientist believe that the human race will be wiped out in 2012.
On the contrary, the population was wiped out.
The Jewish population.
The bubonic plague, or "Black Death" wiped out 1/3 or 33% of western Europe's population.
Most of the population is wiped out by a volcano and then repopulates the area.
They were nearly wiped out
-20 Chuck Norris wiped them out. soonem: I LOVE CHUCKIE!!
Bubonic plague wiped out about 1/3 of the population of Europe.
It wiped out a significant portion of Europe's population and there was no cure.
plague and fire
Plague & Fire
As usual - the human race wiped the species out ! The flightless bird was powerless to escape the explorers who discovered it - and the whole species was wiped out within a matter of years !