Delta AY.4.2 mutation gets ‘Variant Under Investigation’ tag in UK due to high growth rate

AY.4.2, dubbed "Delta Plus" and now named VUI-21OCT-01 in the UK, has now been classed as a Variant Under Investigation (VUI) amid concerns of its increased growth rate.

A new mutation of the Delta variant of Covid-19 which was being monitored and assessed in the UK has now been classed as a Variant Under Investigation (VUI) amid concerns of its increased growth rate, with experts warning it is a reminder that the pandemic is not over.

AY.4.2, dubbed "Delta Plus" and now named VUI-21OCT-01 by the UK Health Security Agency (UKHSA), has been under closer scrutiny in recent days after evidence indicated that it spread more quickly than the dominant Delta variant.