Well even if you achieve immunity, either naturally or through immunisation you can still be a carrier - so the immunisation won't really help in that regard.
This is a case of mass media hysteria. This is really no different to normal seasonal flu, what is making a difference to the average person is that the deaths are being reported constantly via mass media, whereas normal seasonal flu deaths or indeed winter morality in general, deaths on the roads or deaths due to other diseases etc do not attract this kind of media attention. In reality the media loves a good epidemic/pandemic scaremongering episode as it boosts sales of newpapers and TV advertising revenue - and it's companies like Hoffmann–La Roche Pharmaceuticals (Tamiflu) that are getting rich off the back of it all.
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