There seems to be here not so much as a reference to the plagues inflicted miraculously by God on Egypt (compare Exodus 15:26), as to the terrible diseases with which, above other countries, Egypt was infested. Compare Deuteronomy 28:27, Deuteronomy 28:35. It is not without significance that Egypt, which represents in Scripture the world as contrasted with the Church, should thus above other lands lie under the power of disease and death.
Related Commentaries of Deuteronomy 7:15
Deuteronomy 7:15
15 And the LORD will take away from thee all sickness, and will put none of the evil diseases of Egypt, which thou knowest, upon thee; but will lay them upon all them that hate thee.