The anti-viral vaccine of the present invention is produced in transgenic
plants and then administered through standard vaccine introduction method
or through the consumption of the edible portion of those plants. A DNA
sequence encoding for the expression of a surface antigen of a viral
pathogen is isolated and ligated to a promoter which can regulate the
production of the surface antigen in a transgenic plant. This gene is
then transferred to plant cells using a procedure that results in its
integration into the plant genome, such as through the use of an
Agrobacterium tumenfaciens plasmid vector system. Preferably, the foreign
gene is expressed in an portion of the plant that is edible by humans or
animals. In a preferred procedure, the vaccine is administered through
the consumption of the edible plant as food, preferably in the form of a
fruit or vegetable juice which can be taken orally.