Table 2.

Clinical and virological features of the participants contributing env sequences^a

MHP ID	MTCT status	Peripheral VL (no. of copies/ml)	Placental VL (no. of copies/ml)	CD4+ T cells (no. of cells/ml)	No. of env sequences		Avg no. of substitutions/position		Median V1 length (amino acids) (minimum, maximum)		Median V2-C5 length (amino acids)		Median predicted no. of PNLGs
					M	P	M	P	M	P	M	P	M	P
1639	NT	160,259	NA	375	7	26	0.004	0.003	21 (21)	21 (17, 21)	369	369	30	30
1669	NT	81,178	NA	485	5	13	0.015	0.014	14 (10, 14)	14 (10, 14)	356	356	27	27
1702	NT	NA	NA	273	12	7	0.017	0.027	17 (17, 33)	19 (13, 33)	357	354	27	27
2437	NT	13,529	NA	445	10	10	0.019	0.036	19 (19)	19 (17, 19)	361	359	26	26
2502	NT	154,972	NA	38	12	15	0.070	0.061	20 (13, 20)	20 (14, 20)	372	370	28	28
2512	NT	23,301	NA	222	7	6	0.040	0.054	21 (20, 23)	22 (20, 29)	358	361	24	25
2544	NT	587,702	NA	NA	19	19	0.018	0.024	17 (17)	17 (17)	360	358	25	25
3274	NT	NA	NA	103	13	18	0.073	0.063	15 (9, 25)	15 (9, 18)	361	361	26	26
1468	IU	36,453	87,276	274	17	6	0.035	0.040	12 (12, 17)	12 (12, 17)	356	355	26	25
1472	IU	51,551	24,116	397	16	12	0.028	0.048	17 (13, 19)	13 (13, 19)	370	360	28	26
1485	IU	125,813	708,115	329	7	34	0.051	0.014	21 (10, 31)	10 (10, 21)	364	361	28	19
1646	IU	902,778	NA	95	14	9	0.050	0.040	17 (16, 24)	16 (16, 23)	364	364	26	26
1851	IU	NA	NA	761	6	6	0.015	0.040	8 (8, 11)	9 (8, 9)	355	356	23	27
2080	IU	165,000	NA	91	14	7	0.052	0.037	15 (14, 38)	14 (14)	365	365	26	25
2400	IU	98,793	NA	439	16	43	0.043	0.022	17 (17, 22)	22 (17, 22)	349	353	24	26
2797	IU	NA	NA	399	14	18	0.041	0.002	23 (17, 27)	23 (23)	345	344	26	25
3321	IU	NA	NA	220	8	11	0.065	0.047	24 (11, 38)	35 (16, 35)	357	357	26	27

^aM, maternal plasma; P, placental tissue; VL, viral load; V, variable; C, conserved; NA, no data available.