TABLE 4.
Comparison of amino acid sequences of the NAs of seal influenza A(H10N7) viruses at different stages of the outbreak
| Influenza A virus | Amino acid at position: |
|||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 39 | 40 | 78 | 81 | 158 | 174 | 205 | 247 | 259 | 263 | 331 | 369 | 372 | 380 | 386 | 399 | 400 | 436 | |
| A/Mallard/NL/1/2014 | G | G | S | P | V | I | V | S | R | V | K | R | S | P | P | N | N | A |
| A/Seal/Sweden/SVA0546/2014 (April 2014) | E | E | L | P | I | M | I | S | K | I | Q | I | S | R | T | N | N | A |
| A/harbor seal/Denmark/14-5061-1lu/2014-07 (July 2014) | G | G | S | S | I | I | V | S | R | V | K | R | S | P | P | S | K | A |
| A/Seal/Sweden/SVA0824/2014/H10N7 (August 2014) | G | G | S | S | I | I | V | S | R | V | K | R | S | P | P | N | N | A |
| A/harbor seal/Germany/S1047_14_L/2014 (October 2014) | G | G | S | S | I | I | V | S | R | V | K | R | S | P | P | N | N | A |
| A/harbor seal/NL/PV14-221_ThS/2015 (January 2015) | G | G | S | S | I | I | V | I | R | V | K | R | S | P | P | N | N | T |
| Amino acid unique to outbreak strain?a | − | − | − | − | − | − | − | + (I) | − | − | − | − | − | − | − | − | − | + (T) |
a
Amino acids of seal influenza A(H10N7) viruses that were not detected in Eurasian avian influenza virus sequences are indicated in parentheses.