TABLE 2.
Targeted deep sequencing of the codon for NA amino acid residue 274
| Virus or sample | Time of sampling (days p.i.) | No. of reads at bp 820 of the NA gene |
Consensus codon for NA aa 274 | |||
|---|---|---|---|---|---|---|
| A | C | G | T | |||
| Viruses | ||||||
| A/51833 (H1N1)/wt | 0 | 550 | 0 | 3 | CAC | |
| A/51833 (H1N1)/H274Y | 3 | 4 | 1 | 742 | TAC | |
| Samplesa | ||||||
| g 1:1 | 4 | 2 | 2 | 0 | 283 | TAC |
| g 2:1 | 6 | 2 | 1 | 0 | 202 | TAC |
| g 2:2 | 6 | 5 | 3 | 3 | 423 | TAC |
| g 10:1 | 30 | 4 | 1 | 1 | 654 | TAC |
| g 10:2 | 30 | 3 | 0 | 3 | 863 | TAC |
| g 10:1 | 31 | 1 | 1 | 0 | 606 | TAC |
a
Fecal samples from mallards, labeled by generation and mallard number (e.g., “g 2:1” stands for mallard number 1 of generation 2).