There are two reasons you should still get the vaccine. First, the vaccines are highly effective at preventing severe disease and death, including against the Omicron and Delta variants. For all people, the vaccine provides the best protection against serious illness and death. Second, the most effective way to stop the new variants from developing or spreading is for people to get vaccinated. Vaccination matters because it keeps the virus from spreading from person-to-person and variants can only develop when the virus is spreading.