The quote reflects on the pervasive nature of jealousy and greed, suggesting that these emotions are like a sickness that affects everyone. The imagery of "hearts gone bubonic" implies a deep, infectious quality, highlighting how such feelings can corrupt individuals regardless of their appearance or circumstances.
Atwood's use of clothing as a metaphor indicates that jealousy and greed are not just internal emotions but are also manifesting outwardly, showing through people's exteriors. This suggests a societal atmosphere filled with competitive and destructive feelings, indicating a shared human struggle against these darker impulses.