One is presently developed for flu of all kinds - one cide - FluCide.
I would like to see a universal cide for ALL viruses, bar none - it kinda appeals to me and you know what they say, think first and in this day and age to think of something kinda wild at first glance is now said to be feasible - think it and it will be! And then there is cancer - one cure for that? I like the idea. ;-)