Covid-19: what do we really know about AY.4.2, a subvariant of Delta that worries the United Kingdom?

The Delta variant AY.4.2 sublineage now accounts for almost 10% of new “sequenced” positive cases in the UK. Closely watched worldwide, it probably circulates “at low noise” in France, indicate the health authorities.

A sign warns of risks due to the spread of the Delta variant in Blackburn. AFP / Oli Scarff
A sign warns of risks due to the spread of the Delta variant in Blackburn. AFP / Oli Scarff

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Covid19 AY42 subvariant Delta worries United Kingdom

 
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