[s1e4] Down With The Sickness (Verified Source)

While the town deals with the "sickness," Norrie and Joe continue to experience strange seizures, suggesting a deeper, supernatural connection to the dome itself. Other Possible Interpretations

In this episode, the trapped residents of Chester's Mill face their first major medical crisis since the dome descended.

A sudden outbreak of meningitis strikes the town, overwhelming the local clinic. Tensions rise as supplies run low and residents fear the disease will spread uncontrollably within the enclosed space.

Big Jim takes the lead in managing the crisis, further solidifying his authority. His "moral code" remains ambiguous, as he appears to help while simultaneously protecting his own interests.