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Table 2 HIV-1 subtype frequencies according to the patient’s exposure category

From: Temporal dynamics of HIV-1 circulating subtypes in distinct exposure categories in southern Brazil

   Exposure Category
   HET MSM IDU
Group I     
  Subtype B 21 (50.0) 23 (72.0)* 1 (11.0)
  Subtype C 6 (14.3) 2 (6.2) 4 (44.6)*
  CRF31_BC and related recombinants 9 (21.4) 3 (9.4) 2 (22.2)
  URFs_BC - 1 (3.0) 2 (22.2)*
  Subtype F1 and URF_BF 6 (14.3) 3 (9.4) -
  Total (n=83) 42 32 9
Group II     
  Subtype B 13 (21.4) 7 (31.8) -
  Subtype C 21 (34.4) 4 (18.2) -
  CRF31_BC and related recombinants 22 (36.0) 5 (22.7) -
  URFs_BC 4 (6.6) 5 (22.7) -
  Subtype F1 and URF_BF/URF_BCF 1 (1.6) 1 (4.5) -
  Total (n=83) 61 22 -
  1. *significant p value <0.05. Values between brackets are relative percentages of the total of the column. HET – heterosexuals; MSM – men who have sex with men; IDU – injection drug users.