Here is a video by National Geographic that provides a sobering look at the reality of new viruses emerging in our midst. There’s no point in learning about these viruses if it just scares you and makes you paranoid. Here is the point: the West Nile virus which is featured in this video afflicts mostly the very young, the old and people with weakened immune systems. (The very young and the old are also affected because of weakened immunity associated with these age groups).
But you can strengthen your immunity by getting good nutrition, getting plenty of sleep, managing stress and detoxifying regularly. Focusing on maintaining a strong immune system is the best protection against these new viruses that threaten all of us.