People who live in Mexico should not be blamed for this. The wild-eyed assumption that all living things arose from the same common ancestor is the problem.
This is yet another medical blunder inspired by the faulty reasoning of Evolutionists around the world.
Aids is the STD of Monkeys. Syphilis is the STD of Sheep and Goats. Now the Swine flu is respiratory from the Pig. Charles Darwin was from England.
So maybe "the chickens have come home to roost."