World/Pandemic, North America, Caribbean, Europe, Northern Africa, Asia
Hybrid origin, Mexico, Central America, South America
21,22
A1, A2, A3, H1, H2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24