Fear The Walking Dead season 8, episode 3 reveals that natural zombie immunity may be possible in The Walking Dead universe. Jenna Elfman's character, June, suggests that Alicia and her family could possess natural immunity to the zombie virus. PADRE was taking blood from Madison during the time skip to test whether Alicia surviving her zombie bite was due to a genetic factor. This revelation challenges the established rule that dying after a zombie bite is guaranteed, with amputation being the only remedy. The idea of immunity raises questions over what exactly Madison and Alicia could be immune to and risks creating a pandemic plot hole in The Walking Dead franchise.