Table 1. Microneutralization titers against homo- and heterosubtypic LPAIV in mallards.

The table shows microneutralization (MN) titers expressed in log₂ (median and range) detected in samples collected at 14 days post inoculation with H3N8, H4N6, H10N7 and H14N5 LPAIV and at 1, 2, 3 and 4 months of age, respectively.

Age	Group	Primed with / Inoculum	Group 1								Group 2
			H3 Clade						H7 Clade		H9 Clade
			H3N8		H4N6		H14N5		H10N7		H9N2		H12N5
			Positive samples	Median log2 MN titers (range)	Positive samples	Median log2 MN titers (range)	Positive samples	Median log2 MN titers (range)	Positive samples	Median log2 MN titers (range)	Positive samples	Median log2 MN titers (range)	Positive samples	Median log2 MN titers (range)
1 month	G4,G5,G6	NaïvexMock-	0/15	0	0/15	0	0/15	0	0/15	0	0/15	0	0/15	0
	G1,G2,G3	NaïvexH3N8	14/15	5.32 (0–8.32)	0/15	0	2/15	0 (0–4.32)	0/15	0	0/15	0	0/15	0
2 months	G1	H3N8xH4N6	5/5	8.32 (6.32–8.32)	4/5	6.32 (0–8.32)	1/5	0 (0–5.32)	0/5	0	0/5	0	0/5	0
	G4	MockxH4N6	0/5	0	3/5	4.32 (0–7.32)	2/5	0 (0–4.32)	0/5	0	0/5	0	0/5	0
3 months	G1	H3N8xH4N6xH10N7	5/5	7.32 (6.32–8.32)	5/5	5.32 (4.32–7.32)	2/5	0 (0–5.32)	5/5	4.32 (4.32–6.32)	3/5	4.32 (0–4.32)	0/5	0
	G2	H3N8xH10N7	5/5	6.32 (4.32–7.32)	0/5	0	1/5	0 (0–4.32)	4/5	7.32 (7.32–8.32)	0/5	0	1/5	0 (0–4.32)
	G5	MockxH10N7	0/5	0	0/5	0	0/5	0	5/5	6.32 (6.32–8.32)	0/5	0	1/5	0 (0–4.32)
4 months	G1	H3N8xH4N6xH10N7xH14N5	5/5	7.32 (6.32–8.32)	5/5	6.32 (5.32–8.32)	3/5	5.32 (0–6.32)	4/5	6.32 (0–7.32)	0/5	0	0/5	0
	G3	H3N8xH14N5	5/5	7.32 (6.32–8.32)	2/5	0 (0–6.32)	4/5	6.32 (0–8.32)	0/5	0	0/5	0	0/5	0
	G6	MockxH14N5	0/5	0	0/5	0	5/5	8.32 (7.32–8.32)	0/5	0	0/5	0	0/5	0