evidence: No. Pfizer and Moderna COVID-19 vaccines only give your cells instructions for how to make a protein. Those instructions, called messenger RNA or mRNA, are for a protein on the surface of the COVID-19 virus. The Novavax vaccine takes a different approach. It contains one protein from the virus and another ingredient that boosts your immune system's response to the viral protein. [...] No. COVID-19 vaccines are made only with ingredients that help the body recognize and clear out the virus that causes COVID-19. It is a myth that COVID-19 vaccines have microchips that track your location or movement. [...] Pfizer and Moderna COVID-19 vaccines only give your cells instructions for how to make a protein found on the surface of the COVID-19 virus. Those instructions, called messenger RNA or mRNA, allow your muscle cells to make the protein pieces and display them on cell surfaces. This causes your body to make antibodies.