1. A single rna can produce multiple times the protein, because it is like the proverb about giving someone fish and teaching them fishing. 2. Someone already

1. A single rna can produce multiple times the protein, because it is like the proverb about giving someone fish and teaching them fishing. 2. Someone already said, but a protein has no marker saying "local produce". It is either allowed or not and the body reacts or not when detecting it. 3. They hope. Measure the dosage and adjust. As it was reported, some people getting the vaccine have an allergic reaction, but hopefully it will be rare and under control. So far there are only a few cases reported.