TABLE 1.
Samples collected and influenza A virus prevalence in individual waterfowl species in North America between 1976 and 2015
| Group | Species common name (scientific name) | No. samples | Percent IAV prevalence (no. isolates) |
|---|---|---|---|
| Dabbler | Mallard (Anas platyrhynchos) | 30,823 | 17 (5,287) |
| Blue-winged teal (Anas discors) | 18,423 | 8 (1,474) | |
| American green-winged teal (Anas crecca carolinensis) | 7,113 | 5 (377) | |
| Northern pintail (Anas acuta) | 4,409 | 19 (822) | |
| Wood duck (Aix sponsa) | 2,974 | 0.6 (18) | |
| Gadwall (Anas strepera) | 2,947 | 2 (60) | |
| Northern shoveler (Anas clypeata) | 2,379 | 6 (151) | |
| American wigeon (Anas americana) | 984 | 4 (44) | |
| American black duck (Anas rubripes) | 489 | 9 (46) | |
| American black duck X mallard hybrid (Anas rubripes X platy) | 92 | 8 (7) | |
| Mottled duck (Anas fulvigula) | 35 | ||
| Unidentified teal | 25 | 12 (3) | |
| Cinnamon teal (Anas cyanoptera) | 7 | 29 (2) | |
| Black-bellied whistling duck (Anas Dendrocygna autumnalis) | 3 | ||
| Mallard X gadwall hybrid (Anas platy X strepera) | 1 | ||
| Divers | Ring-necked duck (Aythya collaris) | 984 | 2 (17) |
| Redhead (Aythya americana) | 792 | 5 (36) | |
| Lesser scaup (Aythya affinis) | 491 | 3 (13) | |
| Canvasback (Aythya valisineria) | 312 | 2 (6) | |
| Greater scaup (Aythya marila) | 147 | 3 (4) | |
| Hooded merganser (Lophodytes cucullatus) | 137 | 0.7 (1) | |
| Ruddy duck (Oxyura jamaicensis) | 73 | 4 (3) | |
| Common merganser (Mergus merganser) | 30 | ||
| Red-breasted merganser (Mergus serrator) | 16 | ||
| Unidentified scaup | 12 | ||
| Sea ducks | Long-tailed duck (Clangula hyemalis) | 349 | 3 (10) |
| Bufflehead (Bucephala albeola) | 212 | 8 (17) | |
| Common goldeneye (Bucephala clangula) | 140 | 4 (6) | |
| White-winged scoter (Melanitta deglandi) | 29 | 3 (1) | |
| Black scoter (Melanitta americana) | 12 | 8 (1) | |
| Surf scoter (Melanitta perspicillata) | 3 | ||
| Other | Canada goose (Branta canadensis) | 2,172 | 0.2 (5) |
| Snow goose (Chen caerulescens) | 648 | 0.2 (1) | |
| American coot (Fulica americana) | 349 | 1 (5) | |
| Mute swan (Cygnus olor) | 85 | ||
| Sandhill crane (Grus canadensis) | 67 | ||
| Greater white-fronted goose (Anser albifrons) | 58 | 2 (1) | |
| Ross's goose (Chen rossii) | 39 | ||
| Virginia rail (Rallus limicola) | 22 | ||
| Red-necked grebe (Podiceps grisegena) | 19 | 32 (6) | |
| Unidentified duck | 17 | 18 (3) | |
| Pied-billed grebe (Podilymbus podiceps) | 14 | ||
| Domestic duck | 7 | ||
| Domestic goose | 6 | ||
| Trumpeter swan (Cygnus buccinator) | 6 | ||
| Sora rail (Porzana carolina) | 4 | ||
| Lesser White-Fronted Goose (Anser erythropus) | 3 | ||
| Unidentified grebe | 3 | ||
| Common gallinule (Gallinula galeata) | 2 | ||
| Brant (Branta bernicla) | 1 | ||
| Cackling goose (Branta hutchinsii) | 1 | ||
| King rail (Rallus elegans) | 1 | ||
| Red-breasted goose (Branta ruficollis) | 1 | ||
| Tundra swan (Cygnus columbianus) | 1 |