Data suggest that the Omicron variant is more contagious than other variants, including the fast-spreading Delta variant. Studies suggest the variant may be less likely to cause severe disease, but Omicron infection continues to lead to hospitalization and deaths, particularly in unvaccinated people and people at risk of severe COVID-19. Any coronavirus infection can be life-threatening, and the best way to prevent the spread of this or any other variant is to get vaccinated, get a booster if you are eligible, and to wear a mask in indoor public settings or in crowded environments. 

Added November 29, 2021