Vaccinia Immune Globulin (VIG): Current VIG Information

There is sufficient intramuscular vaccinia immune globulin (IM-VIG) stored at the CDC to serve approximately 600-800 adverse events if appropriate recommendations are followed. New lots of intravenous (IV-VIG)  are being produced that conform to intravenous standards. This IV-VIG will require new recommendations for both dosage and preferred method of administration. The new IV-VIG has a low level of aggregated protein, allowing it to be used by either the IM or IV route.

Intravenous VIG will be most likely administered at a lower dose than the intramuscular preparation. In preliminary studies IV-VIG appears to be 5-10 times as potent when tested in animal models. Consult the CDC for up-to-date information on this new IV-VIG.