On July 30, 2021, The Washington Post reported a leaked internal CDC presentation that described troubling news about vaccination and the new Delta coronavirus variant. The document included information gleaned from sources and outbreak studies, including one from a recent outbreak in Barnstable County, Massachusetts.
It was discovered about 75% of the Delta cases in that cluster occurred in previously vaccinated individuals. Those who had been vaccinated were found to carry a similar amount of viral load as the unvaccinated and capable of spreading the disease as easily. This prompted the recent CDC reversal of previous guidance releasing vaccinated people from wearing a mask indoors.
Currently, an estimated 35,000 vaccinated people develop symptomatic infections of COVID-19 in America each week.
The study concluded the Delta variant is very contagious and possibly more deadly than the previous strains. Cases among the vaccinated are considered as contagious as those in unvaccinated individuals. It is still believed the risk of infection and death to be lower in those who are vaccinated.
The presentation offered the consideration of such strategies such as vaccine mandates for health care providers and universal masking to mitigate the resurgence of the disease.
Source: https://www.washingtonpost.com/context/cdc-breakthrough-infections/94390e3a-5e45-44a5-ac40-2744e4e25f2e
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