ESR1 and juvenile polyposis syndrome: In both acute and chronic PJI groups, there were no significant differences in the levels of ESR and CRP between the reinfection and no reinfection patients (p > 0.05, Tables 3 and 4), however, the levels of FIB in the reinfection group were significantly higher than that of the no reinfection group (p < 0.05, Tables 3 and 4).