I think most cases of reactive arthritis once cured, don't recur. I have HLA-B27. I had reactive arthritis for 1.5 years in 1989 in my right knee, left elbow, right TMJ (jaw), and left shoulder; symptoms were mostly extreme fatigue and weakness, and heat/swelling/pain in joints. I had a boyfriend that was cheating on me and gave me chlamydia. Good effect was that I got rid of him (figuratively speaking); bad was I got Reiter's (it was called that then). The rheumatologist started me on naproxen (no change), a corticosteroid (nope, just made me sleepy), and finally a few months of methotrexate. Downside of methotrexate was the nausea, upside is it subdued my immune system enough that it lost interest in attacking me.
Curiously, 15 years ago I caught H1N1 followed a few days later by some guys in a car trying to kill me on my bike-lane commute from work (as distinct from the usual dangers in cycling), and the H1N1 plus stress kicked off arthritis, this time in my hands. The rheumatologist just said we'd start with the same drug sequence, then went on about cardiac ablation that he would be having soon. So, I tried the Aleve, no change, and researched if any diet changes help. One paper suggested gluten free, so tried that. My new GI problems and arthritis disappeared in a few days. The skin rashes that I had for years took a few months to disappear. So, consider switching for a while to a FODMAP, elimination, or other antioxidant/food intolerance diet for a while and see if that helps with any symptoms. I've kept a food log for 15 years because the H1N1 also triggered celiac disease. Not easy to do, but try to minimize/control stress as much as you can. NIH papers and ResearchGate are good sites for medical research papers.