evidence: Both mRNA Covid-19 vaccines have passed the same safety tests and procedures any other vaccine would. [...] Covid-19 mRNA vaccines go one step back in the process. Once inside the body, the mRNA works to build the spike proteins on the surface of the Covid-19 virus. The body then responds by producing antibodies which attack those proteins.This means that if it is later infected, the body will be able to generate a faster and more effective immune response to the virus. [...] Some of the vaccines do contain GMOs. For example, the AstraZeneca vaccine uses a modified version of a virus, which carries the genetic instructions for producing the coronavirus spike protein into human cells, without replicating itself and infecting the body.