The techniques involved in I-2 vaccine production are relatively simple. The I-2
I-2 vaccine may be produced in the ‘wet’ (liquid) or freeze-dried form, depending
on the equipment and staff available. ‘wet’ vaccine is cheaper to produce than
freeze-dried vaccine since it does not require expensive, specialised equipment
and skilled maintenance personnel. On the other hand, freeze-dried vaccine has a
significantly longer shelf life. Table 4 compares the important features of wet and
freeze-dried I-2 vaccine production, storage and handling.
this manual.