The rapidly growing population of Europe and the rising concentrations of people in its towns and cities became a fertile ground for many infectious and contagious diseases, of which the Black Death – a bacterial infection – is probably the most notorious.
Pertumbuhan pesat penduduk di Eropa dan meningkatnya konsentrasi penduduk di kota-kota Eropa menjadi lahan subur bagi penyakit menular, yang mana Maut Hitam—sebuah infeksi bakteri—kemungkinan merupakan wabah yang paling terkenal.