“…H11 subtype influenza viruses usually exist in birds belonging to the order Galliformes and include nine NA combinations. The N2, N3, and N9 subtype recombinants are capable of infecting ducks and have widely circulated in live poultry markets in China (Chen et al., ; Lam et al., ); however, these subtypes can also infect humans who are in frequent contact with infected birds (Gill, Webby, Gilchrist, & Gray, ; Zhang et al., ). Although H11 viruses have not been directly isolated from humans and have been observed to infect humans only through serological evidence, these viruses have shown combined two‐receptor specificity, that is, avian and mammalian (Gambaryan et al., ), which suggests that this subtype has the potential to cross the species barrier, infect mammals (Gambaryan et al., ), and threaten human health.…”