COVID-19 vaccines are vaccines that have been developed to provide immunity against the novel coronavirus, SARS-CoV-2, which causes COVID-19. These vaccines work by triggering an immune response in the body that helps to protect against infection from the virus. Several COVID-19 vaccines have been authorized for emergency use around the world, with some offering high levels of protection against severe illness and death caused by COVID-19. The development and distribution of COVID-19 vaccines have been a critical part of efforts to control the spread of the virus and ultimately end the pandemic.