Some (very) early evidence that secondary attack rates of BA.2 are higher in household settings than those of its older sibling.
From the latest Variant TB 35.
assets.publishing.service.gov.uk/government/upl…
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From the latest Variant TB 35.
assets.publishing.service.gov.uk/government/upl…
1/
Fortunately there's no evidence yet that BA.2 has a greater propensity for vaccine escape. Indeed, there's a possibility it's slightly less able in that regard, though not statistically robust yet.
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You can see BA.2 start to nibble away at BA.1's dominant position here in the bottom right hand corner. Note because of sequencing time, this cuts off around 10 days ago.
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Using S-gene target positive as a proxy for BA.2, over the following week (17th to 24th), BA.2 doubled in proportion from 2.2% to 4.4%.
As is often the case, London appears to be leading the way, with a proportion of 9.5%, whereas NE is the lowest at just 0.9%.
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As is often the case, London appears to be leading the way, with a proportion of 9.5%, whereas NE is the lowest at just 0.9%.
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