Table 4.
Distribution of AIV subtypes in Salburua according to waterbird phenology, year, isolation and host species
| Year | Phenology | N | Isolation N | Subtype | Identified host (N) |
|---|---|---|---|---|---|
| 2008 | BR | 11 | 8 | H3N8 | Anas platyrhynchos (7), ND (4) |
| AM | 1 | 0 | H5N2 | Anas platyrhynchos (1) | |
| 2009 | SM | 1 | 0 | ND | ND (1) |
| BR | 2 | 0 | ND | ND (2) | |
| AM | 1 | 1 | H4N? | ND (1) | |
| AM | 1 | 0 | H6N5 | ND (1) | |
| AM | 2 | 2 | H7N2 | Anas platyrhynchos (1), ND (1) | |
| AM | 1 | 0 | H7N8 | Anas platyrhynchos (1) | |
| AM | 1 | 1 | H7N9 | Anas platyrhynchos (1) | |
| AM | 4 | 1 | H7N? | Anas platyrhynchos (2), ND (2) | |
| AM | 4 | 3 | H11N2 | ND (4) | |
| AM | 9 | 6 | H11N9 | Anas platyrhynchos (4), ND (5) | |
| AM | 3 | 0 | H11N? | Anas platyrhynchos (2), ND (1) | |
| AM | 1 | 1 | H7/H11; N4/N9a | ND (1) | |
| AM | 2 | 0 | ND | Anas platyrhynchos (1), ND (1) | |
| Total 2008–2009 | 44 | 23 | 20 | ||
| 2012 | BR | 1 | 0 | H3N8 | Anser anser (1) |
| BR | 1 | 0 | ND | NDb (1) | |
| 2013 | AM | 1 | 1 | H3N2 | Anas platyrhynchos (1) |
| AM | 1 | 1 | H3N8 | ND (1) | |
| AM | 1 | 0 | H12N5 | Anas platyrhynchos (1) | |
| AM | 1 | 0 | ND | ND (1) | |
| W | 1 | 0 | H5N? | Anas platyrhynchos (1) | |
| 2014 | BR | 1 | 0 | ND | Anser anser (1) |
| Total 2012–2014 | 8 | 2 | 5 | ||
| Total | 52 | 25 | 25 |
AM: southward autumn migration, BR: breeding season, SM: northward spring migration, W: wintering season, N: number of samples, ND: not determined, ?: not identified.
aA mixed infection, it was not possible to elucidate what haemagglutinin type corresponded to its respective neuraminidase.
bThis sample pertains to a pool from 3 Fulica atra and 1 Anser anser, but whose positive unit was not possible to determine.