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Table 2 HSV-2 seroconversion at different time points after childbirth

From: The prevalence, incidence and risk factors of herpes simplex virus type 2 infection among pregnant Zimbabwean women followed up nine months after childbirth

Period observed Enrollment - 4 months pp*
(5 months)
4-9 months pp*
(5 months)
Enrollment - 9 mths pp*
(10 months)
Seroconverters, n 7 13 20
Seronegative women, n 173 166 173
Person-time 72.1 person-years 69.2 person-years 144.2 person-years
Incidence per    
100 PYAR* (95%CI) 9.7 (5.4-14.3) 18.8 (13.9-26.1) 13.9 (9.1-19.6)
Sexually active mothers, n (%) 144 (83.3%) 147 (88.4%) 153 (88.4)%
Person-time 60.0 person-years 61.3 person-years 127.5 person-years
Incidence per 100 PYAR* in sexually active mothers (95%CI) 11.7 (6.5-16.9) 21.2 (16.2-294) 15.7 (10.9-22.8)
  1. *PYAR - Person years at risk, *pp - postpartum