COVID-19 roundup: Re-infection risks, vaccine and saliva test

In this week’s roundup, the latest scientific research on the coronavirus and efforts to find treatments and vaccines suggest that

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A rapid antigen test for SARS-CoV-2 in saliva

Scientists from Hokkaido University have shown that an antigen-based test for quantifying SARS-CoV-2 in saliva samples is simple, rapid, and

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