Abstract
Edible vaccines are promisingly cheaper, easy to take in, safe and easily stored, fool-proof and socially justifiable, especially in poorly developed countries. These vaccines are made by inserting the necessary genes into the plants, which result in the production of the requisite encoded proteins. This concept was introduced ten years ago, but now this has become a reality. A large variety of drug delivery systems have been developed till today. Initially, it was considered to be used only to prevent infectious diseases, but now it is also used as a preventive measure for autoimmune diseases, oncotherapy, family planning etc. Many edible vaccines are currently produced for a variety of human and animal diseases. The concept of transgenic crops is increasingly embraced in industries as well as in developing countries. The fate of edible vaccines may be influenced due to opposition to genetically altered foods. The major obstacles in the approach of the upcoming vaccine technology are already overcome. But the technical hurdles, regulatory and non-scientific confrontations are yet to be subdued. This review attempts to explore the present-day stature and the upcoming scope of these new methods of prevention.
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