There is a recent study from Qatar that says as of now original infection in unvaxxed no longer protects against infection.

I can confirm. I had COVID in March 2020. Since then I've traveled all over the US, gone to crowded dance clubs and bars, traveled to Peru and back, and live in NYC and never got reinfected until May 2022.

Here is the study:

https://www.medrxiv.org/content/10.1101/2022.07.11.22277448v1