Table 2. Nucleotide sequence homology of Bangladeshi H9N2 isolates and representative H9N2 viruses.
| Mideast-B clade (H9N2) | Mideast-C clade (H9N2) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Origin | BD | BD-0994 | NARC-100 (H7N3) | BD/H5N1 | Qa/HK/G1 | IRAN-B102 | Qa/DUBAI-303 | Most similar Bangladesh H9 | Similarity (%) | Most similar Non-Bangladesh H9 | Similarity (%) |
| Mideast-B clade (H9N2) | HA | 98 | — | — | 87.6 | 93 | 90.7 | A/env/BD/11597/11 | 99.6 | A/ck/Tripura/105131/08 | 96.4 |
| Mideast-C clade (H9N2) | NA | 97.7 | — | — | 92.4 | — | 92.7 | A/env/BD/9457/10 | 98.9 | A/ck/Tripura/105131/08 | 96.2 |
| NARC-100 (H7N3) | M | 99.3 | 96 | 88.5 | 93.9 | — | 94.2 | A/pigeon/BD/4303/09 | 99.7 | A/ck/Haryana/2424/04 | 97.2 |
| NARC-100 (H7N3) | NS | 97.3 | 96 | 88.3 | 89.5 | — | 94.7 | A/ck/BD/10411/11 | 99.6 | A/ck/Uchal/8286/06 | 97 |
| NARC-100 (H7N3) | NP | 96.8 | 96.3 | 88.8 | 95.5 | — | 94.8 | A/env/BD/8202/10 | 99.3 | A/ck/Tripura/105131/08 | 97.4 |
| NARC-100 (H7N3) | PA | 99 | 96 | 89.6 | 89.1 | — | 95.1 | A/env/BD/8202/10 | 99.8 | A/watercoot/Haryana/5844/05 | 96.4 |
| NARC-100 (H7N3) | PB1 | 97.1 | 96.3 | 97.8 | 90.2 | — | 91.4 | A/duck/BD/1231/09 | 98.9 | A/ck/Tripura/105131/08 | 98.2 |
| Mideast-C clade (H9N2) | PB2 | 98.5 | 89.4 | 85.4 | 87 | — | 94.3 | A/pigeon/BD/4303/09 | 98.8 | A/ck/Tripura/105131/08 | 98.3 |
Abbreviations: BD-0994, A/Bangladesh/0994/2011; NARC-100, A/chicken/Karachi/NARC-100/2004; BD/H5N1, A/chicken/Bangladesh/12VIR-7140-7/2012; Iran-B102, A/chicken/Iran/B102/2005; Qa/DUBAI-303, A/Quail/Dubai/303/2000; Qa/HK/G1, A/quail/Hong Kong/G1/1997.
Bold indicates the highest nucleotide similarities of each gene segment, in percentage (%), with the respective group.
‘—' indicates that either the gene segment was not available from GenBank or that it was not used for the analysis.