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Articles on Virus mutations

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The best way to stop new variants from arising is to increase the proportion of vaccinated individuals while maintaining infection prevention measures like wearing masks and social distancing. (Shutterstock)

Omicron: Vaccines remain the best defence against this COVID-19 variant and others

Even with a variant like Omicron that may be more transmissible than earlier variants, vaccines remain the most effective tool for protection against COVID-19 and for ending the pandemic.
A COVID-19 patient in an ICU unit in a hospital in Capetown, South Africa, in December 2020. A variant emerged in South Africa that has since spread to other parts of the world. Other new variants could emerge elsewhere. Rodger Bosch/AFP via Getty Images

How worried should you be about coronavirus variants? A virologist explains his concerns

As the US vaccinates millions more people each day, the novel coronavirus works to survive. It does this by mutating. So far, several variants are worrisome. A virologist explains what they are.

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