JESUS CHRIST! did you not watch the final episode? marlene explains to joel that the cordyceps has grown with ellie since she was born, it gives off a signal to other cordyceps that she is one of them. they were going to remove it from her brain and try to copy it and give it to other people.
@chriss_m: he left the show as he wanted to spend more time with his family though. he got fed up with spending 6 months in georgia filming and 6 months at home.
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