SARS-CoV-2 Variants of Concern and Variants Under Investigation in England [11 June 2021] [open pdf - 5MB]
From the Summary: "There are 4 [severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)] variants of concern and 8 variants under investigation. [...] This report has been published to continue to share detailed surveillance of Delta (VOC21APR-02, B.1.617.2). A separate report is published covering our routine data on all other variants of concern and variants under investigation. These additional specialist technical briefings represent early data and analysis on an emerging variant and findings have a high level of uncertainty."
Public Health England Technical Briefing 15
2021 Crown Copyright. Posted here with permission. Document is under an Open Government license and requires proper attribution and noncommercial use to be shared: [https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/]
Government of the United Kingdom: https://www.gov.uk/