Best data is massive real life data.https://twitter.com/VincentRK/status/1420917686746370053 …
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
More communicable, yes, that much has been drummed home. More severe, no. There have been no stories comparing Delta with the original explaining how it's worse, there have been no clear warnings it's worse. The message has been 'save the economy': vaccines and ease restrictions.
https://www.ed.ac.uk/news/2021/delta-variant-increases-risk-of-hospitalisation … (I think Public Health England data also found similar increased risks, although not sure on the most up to date stats)
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.