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Table 2 HIV incidence during pregnancy and non-pregnancy episodes by year and age per 100 person-years (PY)

From: Incident HIV during pregnancy and early postpartum period: a population-based cohort study in a rural area in KwaZulu-Natal, South Africa

  Not pregnant Pregnant
15–24 25–49 15–24 25–49
Year Number of seroconversion (PY) HIV incidence (95% CI) Number of seroconversion (PY) HIV incidence (95% CI) Number of seroconversion (PY) HIV incidence (95% CI) Number of seroconversion(PY) HIV incidence (95% CI)
2010 105 (2089.16) 5.03 (4.15–6.09) 44 (2147.42) 2.05 (1.52–2.75) 11 (255.69) 4.30 (2.38–7.77) 0 (121.62) 0
2011 70 (1374.23) 5.09 (4.03–6.44) 51 (1813.90) 2.81 (2.14–3.70) 15 (178.99) 8.38 (5.05–13.90) 1 (109.56) 0.91 (0.13–6.48)
2012 57 (971.10) 5.87 (4.53 -7.61) 50 (1624.24) 3.08 (2.33–4.06) 6 (141.48) 4.24 (1.91 - 9.44) 1 (101.96) 0.98 (0.14–6.96)
2013 43 (641.05) 6.71 (4.97–9.04) 50 (1381.22) 3.62 (2.74–4.78) 12 (98.4) 12.20 (6.93–21.47) 2 (77.31) 2.59 (0.65–10.34)
2014 37 (400.34) 9.24 (6.70–12.76) 36 (1131.51) 3.18 (2.29–4.41) 3 (51.78) 5.79 (1.87–17.96) 2 (70.20) 2.85 (0.71–11.39)
2015a 16 (134.70) 11.88 (7.28–19.39) 7 (510.57) 1.37 (0.65–2.88) 2 (8.12) 24.63 (6.16–98.48) 0 (14.62) 0
  1. a Some pregnancies in the later part of 2015 would be reported in the first surveillance round in 2016 when women disclose their pregnancy to the household or attend antenatal care; hence 2015 may not include all women who were pregnant in 2015