COVID-19 vaccines provide protection from disease, as a result of stimulating the immune response to SARS-CoV-2. And stimulating immunity through the vaccine means reducing the risk of disease and its effects. This immunity helps you fight the virus if you are exposed to it. And vaccination may also ensure protection for the people around you, because protecting you from infection and disease will reduce your chances of transmitting the infection to others. This is particularly important to protect people who are at high risk of developing severe complications from Covid-19 disease, such as health-care providers, the elderly, the elderly, and other people with other diseases.