The Delta variant: Why is it so dominant

As more of us are getting vaccinated and lockdown restrictions are easing, there appears to be a sign of cautious optimism that we are overcoming the COVID-19 pandemic.

Recently though, there has been more attention paid to different variations of the virus. In particular, the now dominant strain in the UK: Delta. It’s a highly transmissible SARS-CoV-2 virus strain, which was first identified in India in December, and then swept rapidly across the UK, which has led to rising numbers of infections.

As it’s recently predicted that the Delta variant will soon become the dominant variant in other parts of the world too, Tim speaks to Professor Wendy Barclay about what makes this particular strain so dominant, and how well our vaccines are working against it.

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