What does a COVID-19 Vaccine do?
The vaccine does not contain live or dead virus. It contains genetic material called mRNA. It is synthetic mRNA made in the laboratory. It contains instructions for a protein known as S protein.
This mRNA is enclosed in a lipid envelope in the vaccine. Once the vaccine is given, it is taken up by cells. Inside the cytoplasm, mRNA is released from its envelope. Then mRNA makes S protein. This S protein then incites immune response from body. The vaccine recipient makes antibody against this S protein which helps build immunity against COVID-19.