Table 1 Number of first reported reassortant isolates stratified by host and region

Aquatic Bird

1 (38) (0–5.2)

25 (674) (16.2–36.5)

1 (100) (0–5.22)

113 (953) (94.0–134.1)

22 (294) (13.8–33.1)

6 (75) (2.24–12.4)

0 (6) (0–2.7)

3 (51) (0.6–8.2)

0 (11) (0–3.1)

67 (4,289) (52–84.9)

238 (6,491) (209.1–269.0)

Equine

0 (2) (0–1.68)

0 (2) (0–1.6)

0 (0–0)

0 (13) (0–3.2)

1 (20) (0–4.97)

0 (6) (0–2.7)

0 (1) (0–0.9)

0 (0–0)

0 (5) (0–2.6)

0 (54) (0–3.5)

1 (103) (0–5.4)

Human

0 (63) (0–3.5)

4 (1,426) (1.1–10.2)

4 (1,016) (1.1–10.2)

10 (915) (4.8–18.3)

11 (1,020) (5.5–19.5)

5 (168) (1.6–11.4)

0 (40) (0–3.5)

0 (110) (0–3.6)

0 (495) (0–3.6)

28 (4,382) (18.6–40.4)

62 (9,635) (47.5–79.4)

Other Avian^a

1 (19) (0–3.3)

5 (82) (1.6–11.2)

0 (3) (0–2.1)

38 (387) (27.2–51.1)

0 (17) (0–3.31)

0 (31) (0–3.4)

1 (25) (0.2–6.5)

0 (4) (0–2.4)

0 (1) (0–0.9)

0 (95) (0–3.6)

45 (664) (33.1–59.5)

Other^b

0 (0) (0–0)

1 (53) (0–5.33)

(0) (0–0)

6 (90) (2.2–12.5)

0 (5) (0–2.6)

0 (0) (0–0)

0 (0) (0–0)

0 (1) (0–0.9)

(0) (0–0)

2 (221) (0.2–7.1)

9 (370) (4.1–16.9)

Poultry

6 (177) (2.2–12.8)

28 (448) (18.7–39.9)

0 (9) (0–3)

70 (622) (55.2–87.1)

4 (121) (1.1–9.9)

0 (35) (0–3.5)

2 (90) (0.2–7)

2 (18) (0.2–6.2)

0 (4) (0–2.4)

8 (239) (3.4–15.5)

120 (1,763) (100.0–142.5)

Swine

0 (2) (0–1.6)

21 (166) (14.2–31.6)

0 (3) (0–2.1)

56 (508) (43.7–72.6)

18 (166) (10.1–26.3)

5 (30) (1.69–10.4)

(0) (0–0)

(0) (0–0)

2 (9) (0.2–5.4)

69 (868) (55–87.4)

171 (1,752) (147. 3–197.0)

Total (Region)

8 (301) (2.8–14.2)

84 (2,851) (68.0–104.7)

5 (1,131) (1.6–11.6)

293 (3,488) (262.5–327.8)

56 (1,643) (41.6–71.2)

16 (345) (9.2–25.6)

3 (162) (1.1–10)

5 (184) (1.6–11.4)

2 (525) (0.2–7.1)

174 (10,148) (150.2–202.6)

646 (20,778) (600.0–699.0)