Trends in Decline of Antiretroviral Resistance among ARV-Experienced Patients in the HIV Outpatient Study: 1999–2008

<table>Frequency of antiretroviral exposures, according to ARV class, among viremic (HIV viral load &gt;1,000 copies/mL) patients who underwent genotypic testing in the HIV Outpatient Study, 1999–2008. Note: Any “PI exposed” included ritonavir-boosted and unboosted regimens. “PIB exposed” included only ritonavir-boosted regimens.</table>

AIDS Research and Treatment

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Figure 2

Figure 2: Trends in Decline of Antiretroviral Resistance among ARV-Experienced Patients in the HIV Outpatient Study: 1999–2008 