United States:
This is the site where the USDA has its surveillance and monitoring site
This is the state information site, but the link is under construction
This is an up to date travel advisory website for a couple states. You have to put Vesicular Stomatitis in the search box States which come up on the list inform travels as to what the laws are in those states regarding the quarantine and transport of a VS infected horse
This is a data sheet from which is  a diagnostic testing laboratory in the states. 


This is the CFIA information site for general information. 
This is the link to the nearest CFIA office to you.  Telephone contact is necessary for up to date information.
This is a page for information fact sheets.