At the moment H5N1 is not transmitted from human to human. Research is underway to track the virus's natural mutations which could be making it more transmissible. Professor Debby van Riel, at Erasmus Medical Centre, in the Netherlands has looked at how recent variants of H5N1 are better at infecting the upper respiratory tract.⁣ ⁣ #razor #razor_science #razor_science_show #razorscienceshow #science #sciencetok #birdflu #avianflu #pandemic #h5n1 #influenza