Table 4.

Acquisition of HIV Among 2751 African Women With HIV-Infected Male Partners, by Reproductive Stage

Reproductive Stage	HIV Seroconversion, Cases/Person-Years	HIV Incidence, Cases/100 Person-Years (95% CI)
Overall	82/5069	1.62 (1.29, 2.01)
Nonpregnant/postpartum periods	58/4622	1.25 (0.95, 1.62)
Early pregnancy through postpartum period	24/447	5.37 (3.44, 7.99)
Early pregnancy	5/133	3.75 (1.22, 8.75)
Late pregnancy	13/185	7.02 (3.74, 12.01)
Postpartum period	6/128	4.68 (1.72, 10.18)

Reproductive stage was determined by the stage at the study visit when first evidence of HIV was identified. Early pregnancy was defined as the interval from the start of pregnancy (typically the time of the last menstrual period) to gestation week 13. Late pregnancy was defined as the interval from gestation week 14 to the end of pregnancy. The postpartum period was defined as the interval from the end of pregnancy to month 6 after delivery (for women with live births), week 6 after pregnancy loss (for women with pregnancy loss at gestation week ≥20 or newborn death), or week 4 after pregnancy loss (for women with pregnancy loss during gestation weeks 6–19).

Abbreviation: CI, confidence interval.