The emergence of the Omicron variant has us asking questions about the virus and vaccines. What exactly does it look like when Sars-CoV-2 mutates? Could it really mutate to be a "nicer" virus? Can we ever create a vaccine that remains totally effective against Covid-19 in the long term?
To find out the answer to these and other questions, we talk to Dr Gerald Barry, a virologist at University College Dublin.
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