The video is an example of a potential use for the surveillance system.

It means that the surveillance system we have had in place all this time is not working.

"In some cases the surveillance system may not be there," he said.

From what I understand, the surveillance system used was very sophisticated.

That might be less likely to happen when the same surveillance systems are turned back on the authorities.

Our national surveillance system which has since been implemented, is considered today as one of the best in the world.

Although some countries have a surveillance system for such diseases, most do not.

"Those reports - they were received direct from the surveillance system?"

"If people want to set up these kinds of surveillance systems, this is one way they can do it," he said.

"Colonel, what sort of surveillance systems are we up against?"