The COVID-19 delta variant, which experts say spreads more easily and might be more severe than earlier strains of the virus, has prompted new indoor mask recommendations. But are the masks that got ...

Unlike other SARS-CoV-2 variants, the delta variant can attach to copies of itself, forming larger aggregations, or clumps, of viral particles, suggests a study by scientists at the National ...

Unlike other SARS-CoV-2 variants, the Delta variant can attach to copies of itself, forming larger aggregations, or clumps, of viral particles, suggests a study by scientists at the National ...