Data reported in included studies.

ART, antiretroviral therapy.*The follow up duration for those in the early therapy group was 1585.3 person-years as per the Cohen et al publication [15]. Through personal communication [36], we identified that the follow up for the 693 couples in the delayed treatment arm who did not start ART was 1121.2 person-years. There were 184 couples where the HIV-positive started ART, with 276.5 person-years of follow up before the start of ART and 169.5 person-years of follow up after the start of ART.