Once a entity recover from swine flu infection, whether he or she become immune? Any authentic information?


Answers:    As authentic as I can be off the top of my head:
racting the flu lets your body respond by "sicking it out" as some relations call it nicely and gives it the time to form antibodies against the virus. Once you own those antibodies, they recognise the proteins on the shells of that particular strain of flu virus or one very similar (hence why many nation over 50 are immune because they have already been in a similar strain-flu pandemic around 50 years ago).

Once that virus, or a very similar one, enters the body again, those antibodies react straight away, giving the virus no chance to incubate. Hence, immunity.
Yes, after your immune system learns a pathogen, it will own an antibody response to the same pathogen. Before vaccines, inoculation was used. This is an exposure to the real live pathogen and the body develops imperviousness from inoculation. If you didn't become immune from a pathogen it would eventually kill you.
as been shown that elder people have an antibody response to the modern swine flu.


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