The person concerned indicated in her letter to me on 4 September 1998 that she received anti-D in 1972, 1973, 1974 and 1982. Her letter was replied to on 29 September. Every batch number of anti-D has been identified. My Department has been advised that a total of 621 batches were manufactured between 1970 and 1994. Some 336 of these batches have been tested for the presence of hepatitis C including all batches sourced from plasma taken from patient X. In the years 1973-86, 62 batches were manufactured of which 41 have been tested. In relation to the period prior to October 1973, archived samples of batches produced are not availing for testing but the Blood Transfusion Service Board has advised that it has no evidence to suggest that these batches were infectious. In the period September 1973 to December 1973, eight batches were manufactured and six were tested. In 1974, 32 batches were manufactured, 22 were tested. In 1982, 29 batches were manufactured and 16 were tested.
The Blood Transfusion Service Board has tested all batches where there is evidence of infection or potential infection. It has also tested batches which were selected to be representative of the various donors to the plasma pool, to rule out the possibility of infection.