That's bullshit, there's no way they could know that.

Well i linked to the paper.

Your links suck btw

The New England Journal of Medicine is a top 5 medical journal. At the moment probably the second most prestigious medial journal in the world. The don't have to publish papers that suck. They can pick and choose.

If you think there's something wrong with the methodology, be specific about what. If you think there are other papers of higher quality showing a lower effectiveness of the vaccine against delta, show me a few of those papers.

My wife does covid tests as part of her job. I don't think it matters if you're vaccinated as far as catching the delta variant.

Okay, I linked to a scholarly paper where they looked at the effect of the vaccines on Covid variants based on tens of thousands of people.

Your claim is "I don't think it matters". Based on what your wife does as part of her job.

And you question my critical thinking skills?

Everyone else is questioning your critical thinking skills, and what you think is evidence.