Originally Posted by
GhostRider62
This.
The event attendees came from all over the country.
Thus, the Massachusetts vaccine rate is irrelevant
We also do not have good data on the vaccine rates within the community that attended the large "gatherings"
Exactly.
And this is why, in the
CDC study of this event referenced in an earlier post, they state in the Discussion section:
"The findings in this report are subject to at least four limitations. First, data from this report are insufficient to draw conclusions about the effectiveness of COVID-19 vaccines against SARS-CoV-2, including the Delta variant, during this outbreak."