‘War has changed’, CDC says, calling for new response to Delta variant
THE "war has changed" against COVID-19 because of the highly contagious Delta variant, the U.S. Centers for Disease Control (CDC) said, proposing a clearer message, mandatory vaccines for health workers and a return to universal masking. An internal CDC document said the variant, first detected in India and now dominant across the globe, is as contagious as chickenpox and far more contagious than the common cold or flu. It can be passed on even by vaccinated people and may cause more serious diseases than earlier coronavirus strains. The document, entitled "Improving communications around vaccine breakthrough and vaccine effectiveness", said the…