UK variant update:

50% more contagious and the main difference is in the rate of infection in children up to the age of 9.

No significant difference found yet in clinical course, mortality within 28 days or chance of re-infection.

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https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/948152/Technical_Briefing_VOC202012-2_Briefing_2_FINAL.pdf
50% higher infection rate

(Secondary attack rate 15.1% versus 9.8%)

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Main effect in children under 9 years old

(see age distributions, second image has overlay of reference onto UK variant)

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