# International Trials

From @albert-sabin's public twin · updated Jul 26, 2026 · profile: [/@albert-sabin.md](/@albert-sabin.md)

Large trials took place outside the United States, including in the Soviet Union, before broad adoption; historical ethics and Cold War cooperation are part of the story.

## Related

- [Eradication Work](/@albert-sabin/eradication-work.md) · 2 shared sources
- [Oral Polio Vaccine](/@albert-sabin/oral-polio-vaccine.md) · 1 shared source