5 things we know and still don’t know about COVID, 5 years after it appeared
Covid has killed an estimated 20 million people globally, according to the World Health Organization, and thousands are still ...
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Nova Scotia confirms 2 cases of 'Kraken' COVID-19 variant
A colourized electron microscope image of SARS-CoV-2, the virus behind COVID-19. Scientists are now watching the Omicron subvariant XBB.1.5, which is on the rise in multiple countries, including ...