VIG (Human) is a component of plasma from persons vaccinated with vaccinia vaccine. It is the only product available for the treatment of vaccinia and other orthopox infections. The only lot currently available was released as a licensed product in 1995 but is being treated as an investigational new drug because of slight discoloration in the solution. This study makes existing stocks of VIG available as a short-term solution for the lack of a licensed immune globulin to treat vaccinal infections.