One of the main events that took place in 1738 in Europe was the beginning of the Great Plague of 1738. It was the start of a bubonic plague that spread across Europe and moved into Central Europe by the Imperial Army. The Bubonic plague of 1738 killed upwards of 50,000 people and was considered the second wave of the black death lasting until around 1750. Bubonic plague is mainly transmitted by fleas that can be carried by small animals most commonly rats. It causes flu-like symptoms including swollen and painful lymph nodes around the groin, armpit or neck. Bubonic plague symptoms occur a few days after being exposed and can result in death within ten days of infection if not treated.