'Pestilence' in the Bible

So Gad came to David and told him, and said to him, “Shall seven years of famine come to you in your land? Or will you flee three months before your enemies as they pursue you? Or shall there be three days of pestilence (plague) in your land? Now consider this and decide what answer I shall return to Him who sent me.”

So the Lord sent a pestilence (plague) [lasting three days] upon Israel from the morning until the appointed time, and seventy thousand men of the people from Dan to Beersheba died.