Skip to content

SARS-CoV-2 variants

SARS-CoV-2 variants

The below information on Variants of Concern (VOCs) and Variants of Interest (VOIs) is based on whole genome sequencing (WGS) results of SARS-CoV-2 positive clinical specimens performed by Public Health Laboratory Services Branch since December 2020. For detailed explanation on VOCs and VOIs, please refers to World Health Organization (WHO) website


Date of last modification 16 May 2022

WHO Label

Pango lineage*


Variants of Concern (VOCs)

Delta                         B.1.617.2                  655






*Includes all descendent lineages. The full list of Pango lineages can be found at

@Figures are based on the numbers of samples with WGS results. Multiple specimens may have been tested for the same patient. Figures are subject to minor adjustments. Further adjustment might also be made upon reclassification by WHO.