There are various sources for the first line, hence the 6-14x. You can choose whichever you like.
But think about it - have you heard of even one single case of someone recovering from Covid and then spreading it? The CDC haven't - https://news.ycombinator.com/item?id=29201823
Contrast with vaccines. Contrast with the rhetoric. This shit is bananas.
For the second line, again, the CDC have said it themselves, albeit with caveats:
> For people infected with the Delta variant, similar amounts of viral genetic material have been found among both unvaccinated and fully vaccinated people
- https://www.cdc.gov/coronavirus/2019-ncov/variants/delta-var...
Think about how wild it is that with all our communication capabilities you need to hear this from a random dude on HN. There is very sophisticated and coordinated fear-mongering at play.