![]() Second, new data began to emerge that the Delta variant was more infectious and was leading to increased transmissibility when compared with other variants, even in some vaccinated individuals. This case rate looked more like the rate of cases we had seen before the vaccine was widely available. On July 27, the 7-day moving average of cases reached over 60,000. In late June, the 7-day moving average of reported cases was around 12,000.In the days leading up to our guidance update, CDC saw a rapid and alarming rise in the COVID-19 case and hospitalization rates around the country. CDC issued this new guidance due to several concerning developments and newly emerging data signals.įirst, a significant increase in new cases reversed what had been a steady decline since January 2021. On July 27, 2021, CDC released updated guidance on the need for urgently increasing COVID-19 vaccination coverage and a recommendation for everyone in areas of substantial or high transmission to wear a mask in public indoor places, even if they are fully vaccinated. ![]()
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