Alright I have to go for work, but before I leave I'll post a few things to make sure everyone who is interested is sure they want to be in the RP

1)There are four ways for your character to still be alive.
a) You never got the airborne virus and have never been bitten (Next to impossible your character would need to live in a clean suit or a clean bunker)
b) You are immune to the airborne virus and have never been bitten 
c) You caught the airborne virus but didn't turn and have never been bitten
d) A combination of either b or c and you have been bitten and are immune to the blood born virus.
So yes your character can be immune to this virus, but they can die by any other means.

2) Here is a list of the known versions of the infected
Types of zombies:

Made Via Airborne infection:

Walkers- These are the largest body of the newly infected, and are the quintessential Romero-esque zombie. While they are slow they are durable and account for nearly 75% of all the turned infected. They will make lazier grabbing motions with occasional lackadaisical lunges, but once they have you these suckers are hard to get off, and even if you do manage to escape all it takes is a bite.

Runners- Make up a smaller portion of the newly infected, approximately 20% These infected are fit and well fed, they can usually get up to about a jogging speed and are vicious when attacking, quickly lunging with iron gripping hands and chomping down with ferocity.

Spitters- Rarer then Walkers and Runners Spitters are patients who, while still alive suffered from a unique symptom caused by the combination of a ferocious cough and puking, projectile vomit. When they turn they begin to project pure infection. Luckily they account for only 5% of those turned via airborne infection.

Via blood born infection:
Brutes- Massive creatures, made from when a Spitter or Bursters goo pools around multiple infected individuals during the second stage of the infection. Brutes are made from three to four different infected individuals.
Swarmers- Classification for small, young infected individuals, swarmers are faster and more agile then runners, and while they lack strength they are typically found in large numbers.
Minders- These infected individuals act almost like radio antenna linking the minds of other infected into a hivemind and creating coordinated efforts. While occasionally found with larger herds of walkers and runners they are always found in groups of swarmers.
Bursters- These infected are similar to Spitters in that they also project an infectious goo, however there are two distinct differences, a bursters goo is not only infectious but also corrosive, and upon impact or death they pustules and sacks all over the bursters body well burst.

A side note, while I am thinking right now we will be using the multiple versions of infected described above I am not married to the concept, I might decide/be persuaded to go with a different infection idea, and I am definitely open to adding different types of infected