The Delta and Gamma Covid-19 Variants Are Taking Over the US

Two dreaded coronavirus variants are swiftly overthrowing the previously most-dreaded variant in the US. Their ascendance is making experts worry that the country could see continued outbreaks and resurgences of Covid-19 unless the current sluggish pace of vaccination quickens. Ars Technica This story originally appeared on Ars Technica, a trusted source for technology news, tech […]