# Early, but growing evidence vaccines less effective against Delta

**URL:** https://boards.straightdope.com/t/early-but-growing-evidence-vaccines-less-effective-against-delta/945775
**Category:** The Quarantine Zone
**Tags:** covid-quarantine
**Created:** [July 6, 2021, 12:21am UTC](https://boards.straightdope.com/t/early-but-growing-evidence-vaccines-less-effective-against-delta/945775 "2021-07-06T00:21:59Z")
**Posts on this page:** 1
**Showing post:** 93

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### Author: ![puzzlegal](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/puzzlegal/32/3827_2.png) [@puzzlegal](https://boards.straightdope.com/u/puzzlegal)
#### Post date: [August 20, 2021, 12:39am UTC](https://boards.straightdope.com/t/early-but-growing-evidence-vaccines-less-effective-against-delta/945775/93 "2021-08-20T00:39:03Z")

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Here’s a very readable blog post covering the same topic.

> **[COVID and Simpson's Paradox: Why So Many Vaccinated People are Among the...](https://marypatcampbell.substack.com/p/covid-and-simpsons-paradox-why-so)**
>
> Don't let the paradox mislead you

This graph (from the blog) pretty much tells the story  
[![](https://cdn.substack.com/image/fetch/f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F83b82f9e-927b-4924-ba59-b2868a680774_1561x1097.png) ](https://cdn.substack.com/image/fetch/f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984.s3.amazonaws.com%2Fpublic%2Fimages%2F83b82f9e-927b-4924-ba59-b2868a680774_1561x1097.png)

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