It is a contagious or infectious epidemic outbreak of a deadly disease that is devastating like the bubonic plague was.
It is also a contagious epidemic outbreak of an evil influence or idea that is morally, emotionally, and spiritually devastating.
We are currently seeing this being fulfilled. Many of the diseases that are across the globe are kept quiet in the media and need to be researched to find the name of the disease and the extent of the outbreak. Once these reach full stage there will be no way the outbreaks can be hidden.
The epidemic evil influences and ideas are already at work. Sexual immorality, anti-Christian and anti-Bible influences are epidemic now.
Luke 21:11 ESV There will be great earthquakes, and in various places famines and pestilences. And there will be terrors and great signs from heaven.
"YOU WANT SIGNS OF THE END TIMES? THEY ARE UPON US"