Do Children Have Immunity to Swine Flu?

After a group of children came back from visiting Mexico, they tested positive for Swine Flu, however, they did not develop the deadly symptoms of the over 60 individuals who died in Mexico from the mosaic virus. Currently officials are investigating whether the difference in the mortality is because the strains are not identical or if children have some sort of immunity that adults do not. Check out this article, Flu Fear Shuts Down Mexico City, for more information.