Public Health England (PHE) has released more data on the Delta variant first detected in India (B.1.617.2).
Prof Francois Balloux, Professor of Computational Systems Biology and Director, UCL Genetics Institute, UCL, said:
“The latest PHE report largely confirmed and strengthened earlier evidence about the behaviour of the B.1.617.2 (delta) lineage. There have been over 33,000 cases of the delta variant reported in the UK over the last week, and the variant now represents over 90% of all cases of COVID-19 in the UK. Transmissibility of the delta variant in the community is estimated to be ~41% higher than for B.1.1.7 (alpha), with estimates for within-household transmission possibly even higher.