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Contagious and concerning: What we know about Covid-19 variants – Yahoo Lifestyle Australia
Several coronavirus variants with the potential to be more transmissible have caused global concern over whether existing vaccines will still protect the…

Several coronavirus variants with the potential to be more transmissible have caused global concern over whether existing vaccines will still protect the world from a virus that is constantly mutating.
Here’s what we know about them and what this implies for the Covid-19 pandemic.
– How many variants? –
Viruses continually mutate as tiny errors are introduced each time they replicate. The SARS-CoV-2 virus is no different, and has already undergone several thousand mutations since it emerged in humans…
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