Concept explainers
In order to vaccinate people against diseases by having them eat antigens (such as the cholera toxin) or antibodies expressed in an edible vaccine, the antigen must reach the cells of the small intestine in order to enter the bloodstream. What are some potential problems of this method?
To determine: The potential problems associated with the oral vaccine.
Introduction: Vaccination is the process of immunizing a person against disease by administrating weak or dead microbes that cause the disease so that immune system recognizes these microbes and develop immune cells against the disease for future encounters.
Explanation of Solution
For vaccines to form immune cells, it is necessary that the vaccine comes in contact with the blood. In the case of oral administration of the vaccines, the vaccines can only enter the bloodstream during the absorption stage in the small intestine. So, the potential problems associated with oral administration of vaccines are as follows:
- The molecular integration of the microbes present in the vaccine should be able to tolerate the harsh condition of the gastrointestinal (GI) tract.
- Oral vaccines also require to be administered in larger quantity because, in some people, induction of tolerance is difficult at a lower concentration.
- Larger concentration increases the chances of a person receiving the disease instead of immunization.
Oral vaccines should be able to tolerate the harsh conditions of the GI tract, and the concentration of the vaccine should also be high which increases the chances of a person being infected by the disease due to the vaccine.
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Concepts of Genetics (12th Edition)
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