UK cases of 'Stealth Omicron' have doubled in the last couple of days as a new study found the new Covid variant is 33% more transmissible.
The sub-variant of Omicron, called BA.2, is spreading fast according to latest UK genetic sequencing which identified 4,294 cases as of last Friday (Jan 28).
Known UK cases stood at 1,431 just four days earlier on Monday January 24 before the UK genomic database recorded 1,993 cases on January 26.
