ENTPD1 and infection: Nevertheless, even 12 months after infection, the levels of total Tregs (20.41 cells/μL (13.05; 24.66) to 30.65 cells/μL (21.43; 33.30)) and CM Tregs (16.19 cells/μL (9.21; 19.71) to 27.59 cells/μL (19.30; 30.98)), expressing CD39, remained decreased compared to those of healthy donors.