Moscow authorities announced Tuesday that residents will soon have to present an anti-Covid pass to enter restaurants, as the city battles a surge in infections driven by the Delta variant. In a post on his blog, Mayor Sergei Sobyanin wrote that from June 28 restaurant-goers will have to present a QR code showing a negative coronavirus test valid for three days -- or proof they have been vaccinated or were sick with coronavirus within the previous six months. emg/mm/dl