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From what we know about SARS-CoV-2, somewhere between 60 and 72 percent of a population needs to be immune to the virus for its spread to stop. That’s without taking isolation measures into account.   The exact number will depend Read more…


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As fall approaches rapidly, many are wondering if the race for a vaccine will bear fruit as early as January 2021. I am a physician-scientist and infectious diseases specialist at the University of Virginia, where I care for patients and Read more…


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Vaccinations are medicine’s greatest lifesavers. Since the turn of the century, new modelling shows immunisations for 10 major diseases have prevented the deaths of 37 million people in nearly a hundred low- and middle-income countries (LMICs).   By 2030, that Read more…

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