The World Health Organization has said the move was unnecessary because the virus is being spread through humans.
The flu that is moving through humans appears to have a combination of genes from two normally separate sets of pigs, those from the Americas and from Eurasia, scientists say.
Instead it was full of diverse images, many with a dissonant buzz, like Elana Goren's "Through Humans' Scope," a series of etchings with explosive dark fields reminiscent of gunshots depicting or hinting at violence to animals.
It spread easily through humans but — despite having caused panic when it filled emergency rooms in Mexico City, where it was first noticed — ultimately turned out to be less lethal than most seasonal flus.
On the other hand, the qualitative approach is for the most part subjective in that the knowledge input is given through humans.
In the offline world, learning effects are transmitted through humans: as people learn how a product can become more valuable, they modify it accordingly.
