TABLE 4.
Adamantane S31N resistance mutations detected in NY and WI specimens
| Season/state | Influenza A virus subtype (%)a
|
||
|---|---|---|---|
| H1N1 | H3N2 | Undetermined | |
| 2006-2007/NY | 0/37 (0) | 38/42 (90.5) | 6/11 (54.5) |
| 2006-2007/WI | 0/107 (0) | 29/39 (74.4) | NA |
| 2006-2007/total, NY and WI | 0/144 (0) | 67/81 (82.7) | 6/11 (54.5) |
| 2007-2008/NY | 0/44 (0) | 101/101 (100) | NA |
| 2007-2008/WI | 1b/42 (2.4) | 44/44 (100) | NA |
| 2007-2008/total, NY and WI | 1b/86 (1.2) | 145/145 (100) | NA |
a
Data are the number positive/total number (%). NA, not applicable.
b
The one adamantane-resistant A/H1N1 virus specimen (from a 2007 patient with a history of travel in Asia) was susceptible to oseltamivir.