We report the rapid emergence of severe acute respiratory syndrome coronavirus 2 lineages B.1.619 and B.1.620 in South Korea. The surge in frequency in a relatively short time emphasizes the need for ongoing monitoring for new lineages to track potential increases in transmissibility and disease severity and reductions in vaccine efficacy.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8798691PMC
http://dx.doi.org/10.3201/eid2802.211653DOI Listing

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