Recently,the World Health Organization raised its warning about the new H1N1 virus to its highest level.

VOA: special.2009.07.14

It's a kind of early-warning system to track the transmission of viruses in virus hot spots around the world.

CNN: Tracking deadly viruses' spread from animals to humans

The virus seems to have done little damage because users get a warning when it tries to delete important files and asks them to approve the action.

BBC: Pokemon virus contained

When any member of EVAC is hit by a novel virus, either a completely new one or a vicious variant of an old one, they pass on a warning which is distributed to all members of the network.

BBC: Watching the web for viruses