TABLE 2.
Recombinant proteins used for ELISAs
| Protein | Strain (HA) | Comment |
|---|---|---|
| chickIT99 H7 HA | A/chicken/Italy/13474/99 (H7N1) | Homologous to vaccine strain, Eurasian lineage |
| mallNL00 H7 HA | A/mallard/Netherlands/12/00 (H7N3) | Eurasian lineage |
| SH13 H7 HA | A/Shanghai/1/13 (H7N9) | Eurasian lineage |
| chickJal12 H7 HA | A/chicken/Jalisco/12283/12 | North American lineage |
| H15 HA | A/shearwater/Western Australia/2576/79 (H15N9) | |
| NC99 H1 HA | A/New Caledonia/20/99 (H1N1) | |
| cH4/7 HA | Consists of H4 head domain of A/duck/Czech/56 and H7 stalk domain of A/Shanghai/1/13 | Used to measure stalk-reactive antibodies |
| H4 head | Amino acids 52–277a of H4 HA of A/duck/Czech/56 | Used as a control for cH4/7 |
| H7 head | Amino acids 52–277a of H7 HA of A/Shanghai/1/13 | Used to measure cross-reactive antibodies against H7 head domain |
| Avian-origin N1 NA | A/California/4/09 | N1 of 2009 pandemic H1N1 strain, member of avian N1 cladeb |
a
H3 numbering.
b
See Fig. 1B.