This is a really interesting finding. There's precedence too. Pelvic inflammatory disease, classically caused by sexually transmitted bacterial infections like chlamydia or gonorrhea, is associated with a higher risk of developing endometriosis. There also does appear to be a genetic component, but that might have to do with determining how your body responds to infections in a way that's more likely to cause endometriosis. Hopefully finding this new bacterial association can lead to more treatment options.