Measles, mumps, chicken pox, shingles, and several other terrible maladies used to plague much of the population but have since been quashed by vaccines made using weakened viruses.
Marine scientists and restaurateurs may have replaced the whalers and fisher-folk of old, but the shingle homes remain, and, there’s not a chain store to be seen.
If you have a 0, you're going to lose shingles. A 1, you may lose a couple of boards on the roof. A 2, you lose all the windows, and maybe even a wall.
People who have recovered from shingles, a virus infection that affects your nervous system, can be left with an unexplainable, never-ending itch once the rash recedes.