 After the breakup and fallout, to prevent public panic, the entire effort was tightly classified and codenamed "Centurion".Again, surpassing the odds, a single mutant strain of multiple sclerosis survives on its way back to the Earth, and infects the entire population of the West Coast, with an incubation period of nine months.It was during this time that Lee was infected, since he was on the West Coast at the time.