The frequency of AY.4.2, the sub-variant of novel Coronavirus’s Delta variant, is too low to be of concern at this time, the Indian SARS-CoV-2 Genomics Consortium (INSACOG) has said. Its weekly bulletin said the vaccine effectiveness does not seem to be different for AY.4.2 when compared to other Delta variants.

The INSACOG said that frequency of AY.4.2 sub-variant is less than 0.1 percent of all of all variants of concern (VOC) and variant of interest (VOI) and is too low to be of concern at this time.