US health agency loosens Covid mask guidelines
"We're in a stronger place today as a nation with more tools to protect ourselves and our communities from Covid-19," said Rochelle Walensky, director of the Centers for Disease Control and Prevention (CDC) in a call with reporters. The changes involve the metrics used to determine whether people should mask up. Under current guidance, this is pegged to case rates -- with 95 percent of the country considered areas of high or substantial transmission, and thus covered by mask advisories. The new... Читать дальше...