Hundreds of high school seniors rode in bus caravans recently to a mass vaccination site outside Hartford, Conn., where they got Covid-19 shots as a D.J. played Lady Gaga and a selfie backdrop awaited.
A landmark programme to test potential COVID-19 therapies in dozens of countries is restarting with a fresh roster of treatments — this time aimed at tempering the raging immune responses that can worsen severe disease.
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