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Table 1 Patients’ and virus’ characteristics of HIV-1 subtype B infected transmission pairs

From: Tracing HIV-1 transmission: envelope traits of HIV-1 transmitter and recipient pairs

Pair Transmission mode Virus tropism Interval (days)a Viral loadb CD4 countc
T R T R T R T R
T1–R1 MSM R5 R5 95 32 153,000 2,325,000 287 273
T2–R2 HET (MTF) R5 R5 49 42 18,300 412,857 416 625
T3–R3 MSM R5X4 R5 170 84 34,600 14,400 115 656
T4–R4 HET (MTF) R5 R5 57 43 9813 66,000 681 346
T5–R5 MSM R5 R5 −20 26 43,200 373,000 422 430
T6–R6 HET (MTF) R5 R5 63 49 257,532 428,000 623 170
T7–R7 MSM R5 R5 33 61 2830 5,970,000 595 362
T8–R8 MSM R5 R5 3 56 2260 56,300 664 564
T9–R9 MSM R5 R5 89 90 27,800 1550 429 516
  1. T transmitter, R recipient, MSM men who have sex with men, HET heterosexual, MTF male-to-female
  2. aTime from the EDT to the day of sample collection. Negative value means sample was collected before EDT
  3. bHIV-1 RNA copies/ml of plasma at the day of sample collection
  4. cCD4+ T cells/μl at the day of sample collection