This worm infects the lizards, causing the cysts that spread the seeds.

Adult worms typically only infect one kidney.

The simulation found that within 15 minutes, the worm would have infected more than nine million machines.

Within days of Microsoft's releasing a security patch in early August, the worm was infecting computers that had not installed the update.

In addition, the worm infects other machines on the network, hitting even people who haven't recently used their E-mail.

Unfortunately, the worm of doubt has infected Louis's brain.

They think you've got to log in with an account, so there is no way that worms and other viruses could infect them," he said.

Introduced predators such as cats can prey on it and several parasitic worms infect it.

After installing, the worm infects the machine.

Ascarid worms and their eggs are also common and can infect humans if wastewater treatment is ineffective.