Delta variant mildest of all 7 variants tracked in the UK

https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/994997/Variants_of_Concern_VOC_Technical_Briefing_16.pdf 

Data current to June 11, official UK government report

Table 2. Number of confirmed (sequencing) and probable (genotyping) cases by variant as of 14 June 2021

Variant

Confirmed (sequencing) case number

Probable (genotyping) case number*

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Total

case number

Case Proportion*

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Deaths

Case Fatality

Cases with 28 day follow up

Deaths

among those with 28 day follow up

Case Fatality among those with 28 day follow up

Alpha

218,332

5,689

224,021

77.9%

4,259

1.9% (1.8 to 2.0%)

217,228

4,252

2.0% (1.9 to 2.0%)

Beta

871

55

926

0.3%

13

1.4% (0.7 to 2.4%)

858

13

1.5% (0.8 to 2.6%)

Delta

31,132

29,523

60,655

21.1%

73

0.1% (0.1 to 0.2%)

5,762

17

0.3% (0.2 to 0.5%)

Eta

441

0

441

0.2%

12

2.7% (1.4 to 4.7%)

428

12

2.8% (1.5 to 4.8%)

Gamma

170

42

212

0.1%

0

0.0% (0.0 to 1.7%)

155

0

0.0% (0.0 to 2.4%)

Kappa

422

0

422

0.1%

1

0.2% (0.0 to 1.3%)

404

1

0.2% (0.0 to 1.4%)

Theta

7

0

7

0.0%

0

0.0% (0.0 to 41.0%)

5

0

0.0% (0.0 to 52.2%)

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