Liam and Carrie
Why was Liam infected directly after finding the mammoth but Carrie, who brought the tooth home w her, wasn't? And it took way longer for her dad and Jason to show signs too and they dragged the whole thing back.
shareimmune system, there are as many as there are people, and no two are alike. Maybe Liam's immune system was weakened by mumps so he succumbed right away.
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Anyone who has ever read any spoilers,
knows that Winter Is Coming