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What do the new COVID-19 variants mean? | Start Here

Why is the virus that causes COVID-19 mutating? Should we be concerned about the more contagious variants?

The virus that causes COVID-19 is mutating and spreading around the world.

It has led to more contagious variants, including one that has caused an unprecedented spike in cases in the United Kingdom.

Vaccine roll-outs are in full swing but will they still work?

Should we be worried?