Children's Bodies
But the smallpox vaccine existed independently from Tokugawa rule and its social foundations. It cared about children's bodies, not their status. Any child, whether samurai or outcaste, boy or girl, could become a link in the chain of transmission as long as the body had not yet been immunized. Vaccinations thus created impermanent networks between children that followed biological imperatives only and broke through such social constructs as territories, status identities, and family lines.
If physicians wanted to perpetuate the vaccine and rally sufficient numbers of children, they had to take advantage of the vaccine's undiscriminating nature. At the same time they also needed to work through the structures of Tokugawa society that regulated access to children's bodies. To exercise pressure on reluctant parents, vaccinators relied on domain administrators, the headmen of villages and town blocks, five-peoples' groups, and other officials and bodies of control. They also had to insist on strict compliance with the rules of their own professional networks because random transmission would have meant a lack of monitoring and quickly led to extinction of the vaccine.
To explore the subject of vaccinations of outcastes, go directly to the page "Vaccinating Across Status Boundaries." Or stay on the pathway "The Networks and Vehicles of Transmission."