Health
Why the race to find Covid-19 vaccines is far from over – The Guardian
Despite the promising news from Pfizer and Moderna, other efforts – which may be even more effective – continue around the world
While everyone celebrated this months news that not one but two experimental vaccines against Covid-19 have proved at least 90% effective at preventing disease in late-stage clinical trials, research into understanding how the Sars-CoV-2 virus, which causes Covid-19, interacts with the human immune system never paused.
There are plenty of questions still to answer about the Pfizer/BioNTech and Moderna vaccines: how well will they protect the elderly, for example, and how long for? Which aspects…
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