The war against COVID-19 has changed 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 in October 2020 and now dominant across the globe, is as contagious as chickenpox and far more contagious than the common cold or flu. Delta driving deathsThe CDC has said that as of July 26, 6,587 people have experienced breakthrough COVID-19 infections after being fully vaccinated and were hospitalized or have died. (Emmanuel Dunand/AFP/Getty Images)In parts of the world where large numbers of people have yet to be vaccinated, the delta variant has led once again to surging death rates and hospitalizations. The delta variant has pushed up COVID-19 case counts in Britain over the past few months.

Source: CBC News July 30, 2021 22:41 UTC