In general, it's not necessary for you to know whether your flu is H1N1 or a seasonalstrain.
一般而言，你无须知道你的流感是H1N1还是季节性流感。
2
However, most people have no immunity to this virus, which means that more are likely to become infected than with a seasonalstrain of influenza.
然而，大多数人对此病毒没有免疫性，这意味着比季节性流感株更容易感染。
3
After preliminary investigations, it was concluded this month that the cause is not seasonal influenza but rather an entirely new hybrid strain composed of pig, bird and human viruses.