The Great Plague of 1738 was an outbreak of the bubonic plague between 1738–1740 that affected areas in the modern nations of Romania, Hungary, Ukraine, Serbia, Croatia, and Austria. Although no exact figure is available, the epidemic likely killed over 50,000 people. In February 1738 the plague hit the Banat region, having been spread there by the Imperial Army. According to the 1740 Hungarian Diet, the Great Plague claimed 36,000 lives. The disease's spread extended to the Adriatic. It made its way to the island of Brač in modern-day Croatia.