Source of the vaccine and date of production
| NIBSC ID | Type | Description | Date | Lot no. |
|---|---|---|---|---|
| UK 10 | 3 | Vaccine bulk | 05/14/97 | 335 |
| UK 12 | 3 | Vaccine bulk | 1982 | 314 |
| UK 16 | 3 | Vaccine bulk | 05/14/97 | 335 |
| EEVM 39 * | 1 | Seed | 10/16/66 | 360 |
| EEVM 40 * | 1 | Vaccine bulk | — | — |
| EEVM 44 * | 3 | OPV | 05/13/69 | 492 |
↵* SV40-contaminated EEVM vaccines. Lot 492 was from a seed that was in use from 1965 to 1978. See also Materials and Methods.