In medieval times, people from central/northern Europe (Germany, Latvia etc) celebrated the feast of Saint Vitus with the so-called Saint Vitus Dance, though that term also has a meaning of a nervous disorder exhibited by trembling, see Chorea (disease).
The Vitus who is alone is celebrated in the Gelasian Sacramentary and an early South Italian Book of the Gospels, which assigns to his feast a pericope of the cure from demonic possession and sickness.
SaintVitus is one of the Fourteen Holy Helpers, who, as a group, are especially venerated in France and Germany.
SaintVitus Cathedral is a cathedral in Prague, seat of the archbishop, within Prague Castle.