Immunity takes a DIY slant?

Nahh, stick to Tupperware parties ...

LONDON, England (CNN) -- Health experts are warning parents against holding "swine flu parties" in the hope of infecting their children with the H1N1 virus.

Talk of swine flu parties has emerged on Internet forums. The idea is that exposing a child to the H1N1 virus while it remains relatively mild will give the child immunity if the virus returns in a more virulent form later on ...