The CDC report that 2.3x number is based off of was bogus science and it's been debunked repeatedly: https://www.powerlineblog.com/archives/2021/08/more-voodoo-e...
TLDR: The CDC is dishonest and cherry-picks data to meet their narrative. Multiple peer-reviewed studies have shown natural immunity to work at least as well as vaccine immunity for COVID.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8209951/pdf/RMV...
https://www.cell.com/cell-reports-medicine/fulltext/S2666-37...
https://www.thelancet.com/action/showPdf?pii=S2589-5370(21)0...
I'm saying that the previously infected w/o a vaccination are more likely to get reinfected that those who were infected and then get vaccinates: about 2.34x as likely. Reinfection rates are low [0]
The risk of reinfection if not vaccinates may also be higher than the risk for an initial infection if vaccinated: Reinfection rates are about 0.31% [1] and as high as 0.7% in some populations [2] while infection rates among vaccinated are about 0.18% [3]
[0] https://www.cdc.gov/mmwr/volumes/70/wr/mm7032e1.htm?s_cid=mm...
[1] https://jamanetwork.com/journals/jamainternalmedicine/fullar...
[2] https://medicine.missouri.edu/news/study-finds-covid-19-rein...
[3] https://www.medpagetoday.com/special-reports/exclusives/9392...