Future parents will have more good reasons to encourage their children to eat vegetables. In addition to being rich in various vitamins and minerals, these vegetables containing edible vaccines will be respected by more people for their unique role in improving human immunity.

At present, scientists around the world are looking for a new way to transfer vaccines to food for the purpose of immunization through diet. Australian scientists actively participated in the study of this topic. Researchers in Adelaide and Melbourne took full advantage of the government's award funds to further refine their research program to obtain the success of the measles vaccine in potato, pea, banana and even rice flour.

According to the researchers, the current traditional vaccines are not only expensive but, in addition to strict transportation conditions, have low vaccination rates in some developing countries. Plant-based oral vaccines can easily be preserved as plants grow and vaccine transport problems will be solved. According to scientists, this improvement in transportation and distribution may make the vaccine's immune function more fully exerted.

Researchers started with tobacco and first transferred a protein common in measles virus to tobacco, and then used this tobacco to test mice. The results showed that all the tested mice showed antibodies that impede measles virus-infectivity.

Dr. Ian Day, the scientist, said: The reason for choosing tobacco is very simple, because it is a plant that is easy to carry out genetic manipulation. But from a practical point of view, the ultimate target plant must come from those plants that children like to eat. A scientific team in the United States is conducting trials to transfer hepatitis B vaccine to bananas. According to them, this new type of food vaccine costs only a few cents per dose compared to the traditional hepatitis B vaccine, which costs $100 to $200 per dose. However, Dr. Day believes that unless the bananas are processed into a paste, the properties of bananas that are susceptible to deterioration will affect the role of the vaccine.

Another option is rice. Australian scientists have used GM rice to make major breakthroughs in this area. However, as the vaccine is easily destroyed during the cooking process, it seems more feasible to transfer the vaccine into processed rice flour.

The results of the study showed that although some vaccines may be destroyed during digestion, other unaffected vaccines can survive and continue to function, or they can be combined with proteins commonly found in the viscera to achieve immunity. Traditional measles vaccines have been used for active injections, but some negligence or impermissibility of the method during the transport of vaccines will weaken the effectiveness of the vaccine. For example, there are not even several refrigerators in central Sudan. Therefore, the issue of vaccine transportation and storage directly affects vaccination. In developing countries, the vaccination rate is low due to the high cost of vaccines and the need for refrigeration and skilled personnel to operate injections.

To completely solve these problems, scientists are working on a new solution that uses a virus-based vaccine to embed them in edible plants. At that time, people no longer need to store in refrigerators or be vaccinated by professionals. According to researchers' predictions, a safe and effective plant measles vaccine will benefit humans within the next decade.

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