Hi,
Have you enabled risk tracer from SEPM console ?
http://www.symantec.com/business/support/index?page=content&id=TECH102539
https://www-secure.symantec.com/connect/forums/source-virus
Will it be possible to export that report or Screen-shot & attach to the same thread ?
You might be aware, however I would like to add this.
It is recommended to install all the Symantec features AV / PTP/ NTP with latest definitions.Always make sure that your computers are receiving definitions regularly.
You can upgrade your product to latest built i.e SEP 12.1 RU1 Or SEP 11.x RU7 MP1
You windows machines should have all the latest windows updates /Patches.
Disable Autorun ( In SEP 12.1 by default it's disabled)
Please follow best practice guide to handle virus issue.
http://www.symantec.com/docs/TECH105236