Last seen in:
- L.A. Times Daily - Apr 6 2025
- Thomas Joseph - King Feature Syndicate - Aug 31 2024
- Thomas Joseph - King Feature Syndicate - Aug 30 2024
- Eugene Sheffer - King Feature Syndicate - Aug 26 2024
- Thomas Joseph - King Feature Syndicate - Apr 15 2024
- L.A. Times Daily - Nov 14 2021
- Eugene Sheffer - King Feature Syndicate - Oct 27 2021
- The Telegraph - QUICK CROSSWORD NO: 29,752 - Aug 12 2021
- Thomas Joseph - King Feature Syndicate - Mar 19 2020
- Thomas Joseph - King Feature Syndicate - Jun 5 2019
Related Clues:
- Polio vaccine developer
- See 7-Down
- Kind of vaccine
- Lament
- Oral vaccine developer
- Polio scientist
- Founder of microbiology
- Scientist who won a 1977 Presidential Medal of Freedom
- Vaccine developer Jonas
- Vaccine developer
- Sabin's rival
- Polio fighter
- Polio vaccine discoverer
- Inoculation innovator
- Polio conqueror