This would prevent the fire (most likely in the barn) from spreading to the street.

Doctors say they caught the cancer early enough to prevent it from spreading beyond his liver.

Terrorists win when they prevent us from enjoying and spreading our values.

He took this step to prevent the Revolution of 1848 from spreading to his country.

However, it was too late to prevent the video from spreading across the internet.

Nothing I do can possibly prevent them from spreading that information.

China Mobile phone service was cut "to prevent the incident from spreading further".

We must prevent the problem from spreading beyond those star systems in which it has already taken hold.

We could not altogether prevent word from spreading beyond our land.

If your best attempts to prevent a cold from spreading fail, don't feel like you did anything wrong.