In the book "Outlander" by Diana Gabaldon, the author introduces a very personal yet significant symbol: the small, homely scar from a smallpox vaccination. This scar represents not only physical protection against disease but also the broader themes of survival and resilience faced by the characters in the narrative.

The smallpox vaccination scar serves as a reminder of the sacrifices made for health and safety, reflecting the historical context in which the story takes place. It connects the personal experiences of the characters to the larger societal struggles, emphasizing how such marks on the body carry deep meanings and stories of their own.