Table 1.
Strain Designation | Type/Subtype | NA Mutations (Genotype) | Oseltamivir Susceptibility |
Mean IC50a ± SDb, nM (Fold Differencec) |
||
---|---|---|---|---|---|---|
Oseltamivir | Zanamivir | Peramivir | ||||
A/Washington/10/2008 | A (H1N1); Seasonal | WTd | Se | 0.23±0.07 (1) | 0.24±0.08 (1) | 0.09±0.02 (1) |
A/Florida/21/2008 | A (H1N1); Seasonal | H275Y | Rf | 94.82±27.04 (386) | 0.31±0.08 (1) | 11.27±1.36 (134) |
A/Washington/01/2007 | A (H3N2); Seasonal | WT | S | 0.15±0.00 (1) | 0.47±0.04 (1) | 0.12±0.02 (1) |
A/Texas/12/2007 | A (H3N2); Seasonal | E119V | R | 4.19±0.33 (30) | 0.51±0.05 (1) | 0.14±0.02 (1) |
B/Memphis/20/1996 | B; Seasonal | WT | S | 1.61±0.21 (1) | 1.94±0.21 (1) | 0.31±0.06 (1) |
B/Memphis/20/1996 | B; Seasonal | R152K | R | 82.62±2.96 (58) | 26.35±13.59 (22) | 52.80±3.51 (176) |
A/California/07/2009 | H1N1; Pandemic | WT | S | 0.21±0.03 (1) | 0.26±0.04 (1) | 0.06±0.02 (1) |
A/Texas/48/2009 | H1N1; Pandemic | H275Y | R | 79.94±0.06 (348) | 0.36±0.07 (1) | 10.06±0.01 (164) |
Average of 3 independent assays.
SD, Standard Deviation of IC50 values.
Fold difference in IC50 values between mutant and wildtype viruses, by drug and virus type/subtype (IC50 of mutant/IC50 of wildtype virus).
WT, Wildtype
S, Sensitive (Susceptible).
R, Resistant.