Plagues are a part of end times. That is one of the standard things we know. Remember that we are protected. There are certain fiercely protected populations.
But having said that, this guy says UV kills viruses pretty well. The type of UV needed is found in direct sunlight and specialty lamps. Black lights are not really enough. The type of UV needed can damage us, unless you get a special type.
I probably will just stick with vitamins