In the fourth episode of Season 4 of AMC’s The Walking Dead, many people lie ailing at the prison, while the “warriors” are out in the field searching for life-saving medicines. Everyone is at risk of getting sick at this point, even the doctors the small group is fortunate enough to have with them.

See here below for a 2-minute sneak peek of next week’s Episode, 4.5, “Internment,” where Caleb, a doctor, talks to Hershel about what needs to be done about this epidemic. The episode airs on Sunday, November 10 at 9pm on AMC.

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