Then he asked them if there was any evidence that the virus could travel through air.

But a virus can't travel through space.

Weather permitting, the virus can travel many miles.

Studies have shown that, with modern air travel, a flu-like virus can travel the globe in less than a week.

That fact would determine, among other things, how many mosquitoes can bite an infected bird, and how far the virus might travel.

Under the right wind conditions, the virus can travel airborne for short distances.

You can't get infected by standing close to someone with HIV because the virus doesn't travel through air.

And there is even evidence that suggests the way the virus might have traveled from Africa to Greece in ancient times.

The virus can travel with returning players and fans in food and on their footwear.

Others have broken up computer networks so that a virus cannot travel from system to system.