Table 1.

Relative fitness values of viruses containing a PI resistance-associated mutation compared to wild type determined using a growth competition assay

Virus	Relative fitness value (mean ± SD)
M46I/WT	1.00 ± 0.03
G48V/WT	0.53 ± NDa
L63P/WT	1.02 ± 0.12
V82A/WT	0.85 ± 0.06
I84V/WT	0.78 ± 0.04
L90M/WT	0.98 ± 0.04

^aND, not determined.