Omicron and its sub-lineages are the dominant SARS-CoV-2 variants in India, the government informed Rajya Sabha on Tuesday. During the last four months, more than 1900 Omicron sub-variants have been detected among the samples analysed by the Indian SARS-CoV-2 Genomics Consortium (INSACOG) across the country, Minister of State for Health Bharati Pravin Pawar said in a written reply.