If zombies ever exist, then it would be the most infectious disease that has ever existed, because It would need the properties to rapidly infect the human body after exposure. An example would be if a zombie bites someone, theoretically that person would die and turn into a zombie. This means that the disease would be transmitted from the teeth of a zombie to the exposed skin skin of an un - infected person, and then the virus would quickly spread throughout the body until it reaches the brain, killing the person, then turning them into a zombie after the virus revives their brain. This is really infectious and could be the end of humanity, because it would cause widespread infection and death. Due to the the nature of viruses, this would also stand to reason that if an infected person's blood entered the bloodstream of a normal person's, then that virus would infect infect the normal person's system and lower the immune system, which would be another plausible way of Infection.
Kr
