TABLE 3.
Reactivity of Sw/ON/42729 and Sw/SK compared to reference swine viruses in HI assaysb
| Virusa | HI titer in:
|
|||||
|---|---|---|---|---|---|---|
| Anti-H1 MAbs
|
Anti-H1 polyclonal swine serum | Anti-H3 polyclonal swine serum | ||||
| 1-6B2 | 3F2C | 2-15F1 | 7B1B | |||
| Sw/ON/42729A (H3N3) | −b | − | − | − | − | − |
| A/Swine/Minnesota/593/99 (H3N2) | − | − | − | − | − | 320 |
| Sw/SK (H1N1) | >6,400 | − | − | 800 | 10 | − |
| A/Swine/Indiana/1726/88 (H1N1) | >6,400 | >6,400 | 1,600 | >6,400 | 80 | − |
a
Sw/ON/42729 and Sw/SK are the wholly avian viruses described in this report. A/Swine/Minnesota/593/99 is a triple-reassortant H3N2 reference virus, and A/Swine/Indiana/1726/88 is a classical swine H1N1 reference virus.
b
−, HI titers <100 (MAb ascites) or <10 (serum).