This is something I noticed years ago since Exodus was my absolute favorite book of The Holy Bible growing up. When I tried to read a bit of Revelation, I noticed that there were a lot of similarities between that and what I had read in Exodus as far as plagues are concerned. Here's a good link that shows the correlation:

http://www.psalm11918.org/Articles/Topical/Exodus-Plagues-Mirrored-in-Revelation.html