Without viruses, this planet could not survive, says expert in pathogens | Video | CNN

In nature there are viruses that cause us diseases, but they are not the majority.

The virologist and head of the area of ​​emerging pathogens at Mount Sinai Hospital in New York, Adolfo García-Sastre, explains that if they disappeared "the world would cease to exist."

Listen to the example with which the specialist demonstrates how we benefit from viruses.