Humans infected by foreign bacteria are mutating into 3 different stages of infection, each of them with their distinct particularities.
The first stage of infection corresponds to the newborns. Surrounded with spores, the newborn’s body is writhing in pain, fighting against the bacteria. Always remember to stay away from them, because if you get too close, they’ll send you small creatures to protect their host.
The second stage beings are known as outbursters. When it senses a human being close, the outburster sacrifices itself to infect him, bursting in an explosion of contagious spores.
The last but not least, the reapers are the creatures hosting stage 3 bacteria. Strong, fast and resistant, the reapers have a new bone structure that provides them long claws, sharp teeth and thick renewed skin, among others.