The Mayo clinic study is the other major outlier. The Mayo clinic study found that the vaccines were highly effective, but nonetheless tried to extrapolate from

The Mayo clinic study is the other major outlier. The Mayo clinic study found that the vaccines were highly effective, but nonetheless tried to extrapolate from a trend seen in a subset of the data from the final month: > Both vaccines were highly effective during this study period against SARS-CoV-2 infection (mRNA-1273: 86%, 95%CI: 81-90.6%; BNT162b2: 76%, 95%CI: 69-81%) and COVID-19 associated hospitalization (mRNA-1273: 91.6%, 95% CI: 81-97%; BNT162b2: 85%, 95% CI: 73-93%). However, in July, the effectiveness against infection was considerably lower for mRNA-1273 (76%, 95% CI: 58-87%) with an even more pronounced reduction in effectiveness for BNT162b2 (42%, 95% CI: 13-62%). There are many problems with this, and it shouldn't be given much weight.