The virus behind COVID-19 is mutating and immune-evasive. Here's what that means

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https://i.cbc.ca/1.6692615.1671566159!/cpImage/httpImage/image.jpg_gen/derivatives/16x9_460/virus-outbreak.jpg As COVID-19 approaches its fourth year, Omicron continues to mutate and become more immune evasive. But what does mutation mean, what doesn't it mean and why does immune evasiveness*matter? Here are some answers based on what we know at this stage in the pandemic.


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