Table 1.
Percentages of HIV subtypes in samples collected in the United States between 2004 and 2011
| Subtype | % of samplesa from: |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| 2004 (n = 54) | 2005 (n = 546) | 2006 (n = 742) | 2007 (n = 2,132) | 2008 (n = 4,643) | 2009 (n = 6,130) | 2010 (n = 5,255) | 2011 (n = 4,884) | All samples (n = 24,386) | |
| A | 0.00 | 0.18 | 0.00 | 0.47 | 0.56 | 0.83 | 0.51 | 0.68 | 0.61 |
| B | 100.00 | 98.90 | 98.25 | 97.47 | 96.81 | 96.93 | 96.42 | 95.88 | 96.73 |
| C | 0.00 | 0.00 | 0.67 | 0.61 | 1.31 | 0.91 | 1.27 | 1.45 | 1.12 |
| CRF02_AG | 0.00 | 0.55 | 0.27 | 0.47 | 0.45 | 0.54 | 0.80 | 0.66 | 0.59 |
| Other CRFs | 0.00 | 0.37 | 0.27 | 0.42 | 0.26 | 0.31 | 0.55 | 0.55 | 0.41 |
| URFs | 0.00 | 0.00 | 0.27 | 0.19 | 0.22 | 0.18 | 0.10 | 0.14 | 0.16 |
| D, F, G | 0.00 | 0.00 | 0.27 | 0.38 | 0.39 | 0.28 | 0.30 | 0.57 | 0.36 |
| Unclassified | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.04 | 0.06 | 0.02 |
a
The total does not always equal 100 due to rounding. For 2004 to mid-2007, only New York State samples were included. All states were included after mid-2007.