At this time officers imagined that a pandemic would occur, in order that they undertook to vaccinate a sizable percentage of the population. On the other hand at enough time the flu virus was not virulent sufficient to trigger a pandemic. Since then there have only been about twelve scenarios of the  flu and no deaths.   So why is this distinct outbreak considered extra really serious? It would seem that The existing strain of swine flu is a great deal more contagious, and has a wider impact on our immune process than past strains. It might spread rather quickly and is tougher to keep under Handle.