I was in a Burger King in an English airport a few years ago and they had that type of drinks machine. I would've guessed it's standard in most BKs at this stage? Like you say, regardless of the virus, they are a fairly rotten concept. Much like the touchscreens in McDonalds where you can see all the paw prints.I'm told that there's a branch of burgerking opened in Portlaoise now and apparently the staff don't give you your drinks but, for some bizarre reason, the make customers fill their own from a touch-screen vending machine.
A disgusting prospect even without the virus.