Question

A vaccine is a substance that contains all or part of a noninfectious version of a disease-causing organism. When the vaccine is administered to a person, the person's immune system attacks the noninfectious version of the organism and learns to recognize its surface proteins. The next time the immune system comes in contact with the same surface proteins, it has a defense already prepared in order to respond quickly to the invading organism. In this way, a vaccine gives people immunity to the disease-causing organism.

Vaccines can be life-saving, but there have been a few cases of people catching a disease from the administered vaccine.

How might genetically engineered organisms solve this problem?
A.
Disease-causing organisms could be genetically engineered to produce insulin instead of toxins.
B.
Harmless organisms could be genetically engineered to have surface proteins from disease-causing organisms.
C.
Harmless organisms could be genetically engineered to recognize and destroy random cells in the body.
D.
Disease-causing organisms could be genetically engineered to only be harmful to plants.

Answer 1

They have already had it and carrier of it with asymptotic and never knew or if they catch after rains peoples systems are low. In immune systems that is the natural fighter that cross the blood and brain. Barrier if low they can be prone to catching it as well.
But the answers provided im not seeing the real answer as in they put the problem that caused a. Disease in a vaccine only so much of it and add antidote example flu shot . It attacks some people immune system and they get sick because of injecting it into them but the belief is of catching it after I don’t believe I believe either your body can handle it or it does not and rejects it in the blood brain barrier so if recieved then you will get sick after getting the immunization