Plagues are not new. History is replete with plagues of various kinds. The Bible records a number of plagues, one of which is the that of serpents invading the camp of the Israelites. Many died but God intervened to save the Israelites.
"And the LORD said unto Moses, Make thee a fiery serpent, and set it upon a pole: and it shall come to pass, that every one that is bitten, when he looketh upon it, shall live
"And as Moses lifted up the serpent in the wilderness, even so must the Son of man be