SARS Coronavirus 2 XBB.1.9.1

**Semantic type:** Virus

**Definition:** A sublineage variant of the XBB.1 recombinant lineage of SARS coronavirus 2. This lineage has the same amino acid variations in the spike glycoprotein as XBB.1 but also harbors the amino acid substitution F486P. The XBB.1.9.1 genome also contains a non-coding nucleotide substitution, C11956T.

**Synonyms:** - Omicron - SARS Coronavirus 2 Variant Lineage XBB.1.9.1 - SARS-CoV-2 XBB.1.9.1 - SARS2 XBB.1.9.1 - XBB.1.9.1