Symbiosis is an unique ability exclusive to Parasite. It makes the parasite more in tune with its host, which makes it less likely to be noticed.
It makes the parasite fuse with the host's DNA, making it less likely to be noticed and also increasing transmission in certain transportation vehicles such as airplanes and ships.
Effects[]
When reaching the third stage of this ability, it is possible that Symbiosis decreases severity by 16 points. If you evolve a severity increasing symptom and still have negative severity points, the severity increase will be canceled out at the expense of the ability to negate the severity level.