Board Thread:General Discussion/@comment-6192846-20150822000535/@comment-26871067-20150822185636

I can't imagine them being allowed on the ark if they were infected with it still, but Seth slipped past so who knows. I thought HER was something that's sort of genetic; have we seen a case where someone who wasn't born with the condition manifested it later? We know that the Venom sword is able to infect someone with something similar to HER, but as far as I recall it's not exactly the same thing.

I think it's more likely that Levia and Behemo somehow were able to shed the contagion, though it begs the question of how they did so.