what is zombie virus

Scientifically, there is no such thing as a "zombie virus". However, the term "zombie virus" is often used to describe viruses that have been frozen in permafrost for thousands of years and have the potential to be revived. These viruses are often referred to as "zombie viruses" because they have been dormant for so long and can be revived, much like zombies in popular culture. While these viruses are not known to infect humans, there is a small risk that they could start an infection chain that ends up in humans.