H1N1

still rmb few years back H5N1 bird flu, now the new virus attack a month ago which was H1N1 ... whats the meaning of H and whats the meaning of N ? " Influenza A virus strains are assigned an H number and an N number based on which forms of these two proteins the strain contains. There are 16 H and 9 N subtypes known in birds, but only H 1, 2 and 3, and N 1 and 2 are commonly found in humans " this research was found in wikipedia. Nowadays people don't dare to take plane, they scare that someone who may have affected by the virus was on the plane with them, everyone who goes oversea are scare to be affected too, this was such a chaos. Really do wish that this chaos will come to an end.