1.  Still another factor contributing to rapid dissemination was widespread travel and mobility.

2.  But given the widespread travel disruptions that the threat has already caused, a strike seems in many ways to have already started.

3.  The dispute has caused widespread travel chaos in Ireland on what was a bank holiday weekend.

4.  The dispute caused widespread travel chaos in Ireland on what was a bank holiday weekend.

5.  The dispute has caused widespread travel chaos in Ireland during a public holiday this weekend.

6.  The dispute has caused widespread travel chaos in Ireland on what is a bank holiday weekend.