Fig. 1

The proportion and levels of HIV drug resistance to common NRTIs and NNRTIs drugs. NRTI: nucleoside reverse transcriptase inhibitor; NNRTI: nonnucleoside reverse transcriptase inhibitor; 3TC: lamivudine; FTC: emtricitabine; ABC: abacavir; ddI: didanosine; d4T: stavudine; TDF: tenofovir disoproxil fumarate; AZT: zidovudine; NVP: nevirapine; EFV: efavirenz; DLV: delavirdine; ETR: etravirine. NRTIs drugs: 3TC, FTC, ABC, ddI, d4T, TDF, AZT; NNRTIs drugs: NVP, EFV, DLV, ETR