From an email from one of our trusted medical prac

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...A prominent real world example of viral uptake and transmission among the vaccinated is a case cluster that occurred in Massachusetts in July. Details of the cluster were published Friday in the CDC’s Morbidity and Mortality Weekly Report. The report details 469 cases stemming from a series of celebratory events at bars, restaurants, and houses in Provincetown in early July (there are now known to be over 900 cases associated with this cluster). Of the 469 cases, 346 (74%) occurred among people who had been fully vaccinated. Of these, 79% became symptomatic to some degree. 4 of the 346 vaccinated individuals (1.2%) required hospitalization. None died.

And this leads to the good news: though the vaccines seem to be somewhat less able to prevent symptomatic disease caused by Delta, they remain extremely protective against severe disease and death. Data presented at an internal CDC meeting this week indicate that there are currently 0.96 Covid-related deaths per 100,000 unvaccinated individuals per week in the US. Among the vaccinated, the number is 24 times lower: 0.04 deaths per 100,000 individuals per week. Similarly, there are currently 2.52 hospitalizations per 100,000 unvaccinated individuals per week, but just 0.1 hospitalization per 100,000 vaccinated individuals per week. These numbers indicate that there is a roughly 25-fold reduction in risk of hospitalization and death among the vaccinated as compared to the unvaccinated. This is what the vaccines are primarily meant to do – prevent severe illness and death. ...

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