APOCALYPSE WHEN? Zombies Would Wipe Out Humans in Less than 100 Days.

In the new analysis, the University of Leicester undergraduates assumed that each zombie would have 90 percent success at finding and infecting one human a day, a rate that would make the zombie virus twice as contagious as the Black Death, the plague that devastated Europe in the 1300s.

The researchers further estimated that each zombie could live 20 days without braaaaaains.

Assuming a starting population of 7.5 billion people, approximately the world’s population today, the students calculated that it would take 20 days for a single zombie to start an epidemic of noticeable proportions. At that point, the pandemic has begun. Assuming no geographic isolation, in fact, the human population would drop to 181 by day 100, with 190 million zombies roaming around.

With some geographical isolation, the situation would be a tiny bit better for humans. Assuming the zombie virus had to spread through contiguous regions and that zombies were somewhat limited in their ability to travel (not leaving their current region until there were 100,000 zombies roaming there), human survivors would number 273 by day 100.

But wait. The paper also says, “We have also not included the possibility for the humans to kill the zombies.”

Maybe our disarmed British friends would be wiped out in weeks, but you’d have to give Americans much better odds.