Everything I know about the zombie invasion:
Man bites mans face off (Everyone knows about this):
usnews.msnbc.msn.com/_news/2012/05/26/11899538-report-miami-police-shoot-naked-man-chewing-on-victims-face?lite
Media explanation: Bath Salts, but PCP was the immediate rumor.

Very soon before that happened, water 48 miles away was shown to be contaminated:
miami.cbslocal.com/2012/05/26/dont-drink-the-water-boil-order-issued-for-parts-of-broward/
Media explanation: E Coli

Doctor in flordia (Not Miami, but still Flordia) spits blood on someone:
www.nydailynews.com/news/national/crazed-florida-doctor-facing-charges-spitting-blood-troopers-dui-arrest-video-article-1.1085311
Media explaination: He was drunk

Also, another story is a little odd. A man cut off pieces of himself and threw them at people.
www.nbcnewyork.com/news/local/Hackensack-Man-Stabs-Self-Cuts-Skin-Intesti nes-Throws-Flesh-Police-155455985.html
Media explaination: "Bath Salts and spices"

Also I don't have a link to prove it, but I've heard 3 Miami earth cams went down the day the mans "Face" was bitten.

Now to those who say "Zombies were made up, theres no chance they can be real", here is my explanation for that:
A more advanced version of rabies could have a kind of Zombie effect. Mindless killing machines who can infect others. The only thing is, there no way this could raise the dead from their graves, but none of these stories exactly claim that happened. Also it could make them be able to survive more pain by shutting down nerves.