Table 4. Results from bivariate analyses performed between each SIV by each human influenza virus studied.

	A/Brisbane/59/2007(H1N1)	A/Brisbane/10/2007(H3N2)	A/Mexico/4108/2009(H1N1)
A/Sw/Lutol/3/00(H1N1)
Chi-square p-value	0.001	0.012	0.358
OR (95% CI)	4.4 (1.8–10.8)	3.1 (1.2–7.9)	1.5 (0.6–3.6)
A/Sw/Gent/7625/99(H1N2)
Chi-square p-value	0.006	<0.001	0.331
OR (95% CI)	2.2 (1.2–4)	6 (2.3–15.6)	1.3 (0.8–2)
A/Sw/Flanders/1/98(H3N2)
Chi-square p-value	0.587	0.472	0.521
OR (95% CI)	1.2 (0.7–1.9)	1.3 (0.7–2.3)	1.2 (0.7–1.8)