Reactivation of hepatitis B virus associated with immunosuppression therapy

Hepatitis B virus (HBV) reactivation is defined as a shift from negative to positive hepatitis B surface antigen (HBsAg), or new HBV DNA detection or its rise compared with baseline (Supplemental Table 1, Appendix 1, available at [www.cmaj.ca/lookup/suppl/doi:10.1503/cmaj.180389/-/DC1][1]).[1][2]