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. 2011 Mar 29;8(3):e1000430. doi: 10.1371/journal.pmed.1000430

Table 1. HIV-1 drug resistance emergence among breastfeeding infants in the Kisumu Breastfeeding (KiBS) trial, Kenya, 2003–2008.

Visit First HIV-PCR Positive Samples with Resistance (n)/Samples Tested (n)
0–2 wk 6 wk 14 wk 6 mo >6 mo
Delivery 12 0/7 5/12 10/12 11/12
2 wk 2 0/1 0/2 1/2 1/2
6 wk 6 1/6 1/6 1/6
14 wk 2 2/2 2/2
6 mo 2 1/2
9–18 mo 8 0/8
Total 32 0/8 6/20 14/22 16/24 0/8

Age refers to scheduled visit age at which samples were obtained.