I don't have papers handy but I've been using L. Sakei nasal probiotics to treat CRS quite effectively. Not quite cured yet after 5 days but much, much better.
I found these articles on the subject with my first search and they're already opening my eyes:
- Loss of normal microbial diversity may be culprit behind chronic sinusitis https://www.news-medical.net/news/20120913/Loss-of-normal-mi...
- The Best Probiotic For Sinus Infections https://lactobacto.com/2018/11/05/the-best-probiotic-for-sin...
This article titled "New ways to flush out sinus infections" I found because of another comment but the doctor here also mentions bacterial balance:
> Current research in my field suggests this may be caused by the disruption of the natural bacterial habitat of the sinuses by the antibiotics, which is why more doctors are utilizing probiotics
https://www.bcm.edu/news/new-ways-to-flush-sinus-infection
Edit: formatting