Some of the forever asked and never answered questions in the Walking Dead universe are: How did this happen? Where did the Walker virus come from? (and) What is it, exactly? Because these questions remain unanswered there’s plenty of opportunity to speculate by fans and it seems every other person out there has a theory. As a fan I am no different…what probably is different is my theory. My own personal theory about the Walker virus has to do with herpes.
Wicked Nerdery 