COVID-19: Which coronavirus variants have been recorded in the UK?

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Two new coronavirus variants have been identified in the UK - both were first reported in India.

The two new variants are under investigation and not classed as "of concern".

They share the same lineage - a fingerprint of genetic mutations - as the existing Indian variant known as B.1.617.

Public Health England said it has found 202 cases of one of the variants and five cases of the other and they are "geographically dispersed in England".

In all, there are four variants of concern known to be in the UK, including those first identified in Kent, Manaus (Brazil) and South Africa. And there are nine other variants under investigation.

Here are the variants identified in the UK, as of 21 April, and listed by the government:

B.1.1.7: The Kent variant, first sequenced in the UK in September 2020 and a variant of concern.

So far 226,635 cases of this variant have been found in the UK: 191,150 in England, 20,983 in Scotland, 11,604 in Wales and 2,898 in Northern Ireland.

B.1.351: The South African variant, first sequenced in the UK in December 2020 and a variant of concern.

There have been 737 cases of this variant so far: 657 in England, 34 in Scotland, 37 in Wales, 9 in Northern Ireland

P.2: First recorded in Brazil and sequenced in the UK in November 2020 and a variant under investigation

There have been 60 cases so far: 54 in England, five in Scotland, one in Wales.

P.1: This variant is from Japan via Manaus, Brazil. It was sequenced in Brazil in January 2021 and the UK a month later. This is a variant of concern. It has been called the 'Manaus variant'.

There have been 82 cases so far: 72 in England, 10 in Scotland.

A.23.1 with E484K: First detected in England in December 2020 and a variant under investigation.

There have been 79 cases so far, all in England.

B.1.1.7 with E484K: First detected in England in December 2020 and a variant of concern.

There have been 43 cases so far, all in England.

B.1.525 (previously UK1188): First detected in England in December 2020 and a variant under investigation.

There have been 388 cases: 348 in England, 30 in Scotland, 10 in Wales.

B.1.1.318: The origin of this variant under investigation is not yet clear but there have been 150 cases in the UK: 141 in England and nine in Scotland.

B1.324.1 with E484K: The origin of this variant under investigation is unclear but there have been two cases in England.

P.3: Origin unclear but five cases so far, all in England.

B.1.617: First detected in India and a variant under investigation.

There have been 193 cases in the UK: 172 cases have been found in England, 13 in Scotland and eight in Wales.

B.1.617.2: First detected in India and a variant under investigation.

There have been 202 cases so far, all in England.

B.1.617.3: Also first detected in India and a variant under investigation.

There have been five cases so far, all in England.

Professor Jonathan Van-Tam, deputy chief medical officer for England, has said it was difficult to assess how these variants will affect the vaccine programme - but he hoped inoculations will continue to protect people against severe illness at least.