| Answer | Crossword Clue |
|---|---|
| SALK | Polio pioneer |
| SABIN | Polio pioneer |
| SABIN | Polio vaccine pioneer |
| SALK | Polio vaccine pioneer |
| SALK | Polio prevention pioneer |
| SALK | Polio-vaccine pioneer |
| SABIN | Polio-vaccine pioneer |
| SALK | Polio vaccine pioneer Jonas |
| SABIN | Polio vaccine pioneer Albert |
| SABIN | Oral polio vaccine pioneer Albert |
