Latest news tells the amounts of infected people in Mexico are aprox 2500. Still, the number of deaths that has been confirmed due to Swine Flu has been down adjusted to 7.
So, basically this flu seems to be as any other flu in regard of death ratio. New with it is as people say, that it's transfered from human to human and very agressive. Other than that I don't think there should be any need to take this as a world thread. Sure, it's dangerous by all means, but so far 7 out of 2500 (aprox) has died from it, while the others has gotten a normal, but hard flu.