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Why are COVID variants so dangerous? | ABC News
How dangerous are the new Covid-19 variants?
COVID: What Are COVID-19 Variants? Why Do They Occur? | Covid Variant vs Mutation | The Quint
COVID Variants Explained: Are They More Deadly? Do Vaccines Work? They Spread Faster? - TLDR News
How Serious Are Mutated Coronavirus Variants? | Explain This
U.K. scientists hunt for new, more dangerous Covid variants resistant to vaccines
Potential dangers of virus variants
Infectious disease specialist discusses dangers of new Covid variants
How Dangerous is the Covid-19 Delta Variants?
Officials Watching Different COVID-19 Variants That Could Be More Dangerous
Are Covid-19 variants more dangerous? | Experts Explain
Virus Expert: We're At War With 'Dangerous' Covid Variants | The 11th Hour | MSNBC