| Clue | Source | Date |
|---|---|---|
| Vaccinate,...against polio | ||
| Safeguard that is plugged by mums in broadcast (8) | ||
| Vaccinate | The Guardian Quick | 05 Feb 2024 |
| One pair of Frenchmen take drugs going around Ulster to protect from infection | Irish Times Crosaire | 12 Nov 2021 |
| Inoculate against | Irish Times Simplex | 07 Jul 2020 |
| Inoculate | The Times Concise | 15 Dec 2017 |
| One pair of Frenchmen take drugs going around Ulster to protect from infection | Irish Times Crosaire | 06 Apr 2016 |
| Make resistant to disease | The Times Concise | 07 Oct 2015 |