How quick did the black death spread?

Answer 1

The black death is thought to have returned every generation with varying virulence and mortalities until the 1700s. During this period, more than 100 plague epidemics swept across Europe. On its return in 1603, the plague killed 38,000 Londoners.Other notable seventeenth century outbreaks were the Italian Plague of 1629–1631, and the Great Plague of Seville (1647–1652), the Great Plague of London (1665–1666),and the Great Plague of Vienna (1679). There is some controversy over the identity of the disease, but in its virulent form, after the Great Plague of Marseille in 1720–1722, the Great Plague of 1738 (which hit eastern Europe), and the Russian plague of 1770-1772, it seems to have disappeared from Europe in the 19th century.