Omicron is a variant of SARS-CoV-2, the virus that causes COVID-19, and was first reported to WHO November 24, 2021 in South Africa. According to the CDC, it appears that the Omicron variant spreads more rapidly and easily than the Delta variant and poses greater risk for reinfections and breakthrough infections in people who are fully vaccinated. As of this writing, more information is needed to determine the severity of Omicron infections compared to other variants, however, it does further emphasize the importance of vaccination and boosters.