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You can use Virus definitions distribution report or log to find the same info.
Virus Definitions Distribution |
Use this report to make sure that all the groups, domains, or servers in your network use up-to-date virus definitions files versions. |
About Computer Status reports and logs
http://www.symantec.com/docs/TECH95541
Also you can refer computer status report.
Computer Status |
Displays information about the operational status of the computers in your network, such as which computers have security features turned off. These reports include information about versions, the clients that have not checked in to the server, client inventory, and online status. |
About the different types of Symantec Endpoint Protection Manager Reports
http://www.symantec.com/docs/TECH95538