Introduction:In late November 2021, the World Health Organization (WHO) designated the strain known as B.1.1.529 as a variant of concern, and granted it the omicron designation, making it the fourth variant of concern listed along with alpha, beta, gamma, and delta variants. The purpose of the study is to present information on the occurrence, characteristics and some data on the omicron variant. Conclusions: The deficient health infrastructures present in our country, the low vaccination rate and the presence of population with comorbidities and immunodeficiency or both, are more susceptible to infection to these new variants. A global effort by the government, pharmaceutical/biotechnology industries, and academic and health institutions is required to effectively contain this pandemic.