breaking news - eu urges stockpile, page-3

What I don't understand about the Gov't giving every Aussie a free hit, is that it doesnt build up our immunity to the virus, therefore we have out hit of relenza and two weeks later we've got it again.
I've got three courses of relenza and in truth I understand that it's just a short term cure and my major concern is that every time I use it, I become more tolerant and the virus has a better chance of fighting the relenza and me getting sick.