What coronavirus variants should I watch and what are they called? The World Health Organization (WHO) tracks this so you don’t have to watch. Omicron, including its subvariants and sublineages is the main line of monitoring. As of August 9, 2023, XBB 1.5, XBB 1.16 and EG.5 are the top “variants of interest”. In addition, WHO tracks multiple variants in the BA, XBB, and CH families of viruses.