Why has H5N1 bird flu infected other mammals more readily? Humans lack one type of cell receptor in the upper respiratory tract that H5N1 viruses can use to establish an infection. Minks, for example, have two different kinds of cell receptors in their respiratory tracts, and one of these allows for easier infection with H5N1 viruses. Because of this, minks are more susceptible to infection with H5N1 viruses than people. Additionally, the infections in minks occur in the upper respiratory tract, which allows for easier transmission to other minks. In past H5N1 infections in humans these infections occurred in the lower respiratory tract.
Негізгі бет H5N1 Avian Flu in Mammals
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