Are there any towns or cities at risk from the Yellowstone?
Any where in the US can be at risk of having herpes. Any one that has inercourse or oral sex can be at risk of contracting herpes. Also it's very common to have cold sores, which are caused by the oral herpes virus. It would be more common for people to have genital herpes in larger towns or cities. About 40 percent of the sexually active people have herpes.
Many deserts have major towns and cities where millions and millions of people live and work, They may be employed as doctors, lawyers, teachers, preachers, police officers, fast food workers, farmers, ranchers, carpenters, truck drivers or any other occupation found in towns and cities not in the desert.
There is currently no evidence that there is a risk of a major eruption happening any time soon. While an eruption may be possible, it is unlikely to occur any time in the next ten thousand years. The most likely form of activity appears to be in the form of laval flows, but even these are unlikely to occur any time soon.
England doesn't have any cities beginning with A, but it has many towns that begin with the letter, including: Accrington, Ashford, Alton, Appleby, Altringham, etc. In fact, there are only two cities in the whole of the UK that start with the letter A. Those cities are Aberdeen (Scotland) and Armagh (Northern Ireland).