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‘Bristol Covid strain’ that may evade vaccine immunity discovered for first time in US

The Bristol variant of the coronavirus, also called E484K, has been detected for the first time in the United States, the Centers for Disease Control and Prevention (CDC) said on Wednesday.

Research into the variant shows that it has the same makeup of the Kent strain in the United Kingdom, but with an additional mutation on the E484K spike protein.

Public Health England (PHE) has deemed the Bristol variant one of the four variants of concern in the UK due to its potential impact on Covid-19 vaccines.

“E484K is currently the mutation with most evidence of causing antigenic change,” the PHE said in a statement last week. “Several independent studies showing the impact of different antigenic variants have concluded E484K is among the single mutations with the greatest impact.”

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