The effects of virus variants on Covid-19 vaccines

The effects of virus variants on Covid-19 vaccines

All viruses – including SARS-CoV-2, the virus that causes COVID-19 – evolve over time. When a virus replicates or makes copies of itself, it sometimes changes a little bit, which is normal for a virus. These changes are called “mutations”. A virus with one or more new mutations is referred to as a “variant” of the original virus.

What causes a virus to change to a new variant? Read more. Here.

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