Some say it was a new and different bacterium that poses little threat to the citrus industry.

It's the nitrogen being released as the new bacterium kills off the old one.

Suddenly, he's surrounded by new bacteria he's never seen before.

Finally, the unfortunate bacterium bursts and releases millions of viruses that infect new bacteria.

Here once again, for a buck, science, technology and corporations were going to invade my body with new bacteria that hadn't existed on the planet before.

A new bacteria or algae in the lake, causing personality changes.

The new bacteria each attack more than 70 percent, G.E. officials said.

Research in this area is scary, not just because scientists might accidentally create a new and deadly bacterium or virus.

The number of new bacteria appearing per unit time is proportional to the present population.

But with a new bacterium appearing in lake samples, not everyone thinks it is safe to go back in just yet.