Covid-19, can the vaccine be trusted?

The arrival of covid vaccines has raised hopes of a return to normal life. Since the beginning of the year, thousands of people have already received the first injection in our country, but the logistical challenge of vaccinating as many people as possible quickly is immense. How is Switzerland organizing itself? Will there be enough doses for everyone? How does the vaccine work? Is messenger RNA technology safe? And above all, is this really the beginning of the way out of the crisis?