Table 1.
Twenty most frequently encoded antigenic motifs from Clade IV virus strains collected 2012‐2016 (n = 904)
| Antigenic motif | No. of virus strains with motif | Putative antigenic cluster | No. of isolates testeda , b |
|---|---|---|---|
| NYNNYK | 445 | Red | 8 |
| KYNNYK | 139 | Green | 12 |
| NYSNYK | 77 | Unknown | 7 |
| KYHNNK | 33 | Unknown | 4 |
| NHNNYR | 30 | Cyanc | |
| SYKNYK | 25 | Unknown | 4 |
| KHNNHK | 25 | Unknown | 5 |
| NHNNYK | 19 | Red | 1 |
| KYNNSK | 18 | Unknown | 2 |
| KYHNYK | 13 | Unknown | 2 |
| KHKNYS | 10 | Purple | |
| KHHNNK | 10 | Unknown | 2 |
| NYKNYS | 9 | Unknown | |
| NHNNHK | 9 | Unknown | 1 |
| KYNNNK | 8 | Gold | |
| NYHNYK | 8 | Red | |
| KHNNYK | 7 | Blue | |
| NYHGHE | 7 | Brown | |
| KYHDYK | 6 | Unknown | |
| NYKNYK | 6 | Unknown | 1 |
a
Number of isolates tested in this study.
b
Two additional isolates were tested that did not encode a motif listed here.
c
Previously characterized and not detected in 2014‐2016.