According to Symantec, the Trojan.Brisv.A!inf is a discovered in July 2008 but is increasingly becoming rampant as of February 2009. This trojan, according to Symantec, is a detection for multimedia files infected with Trojan.Brisv.A.
If you have media files that have been infected with the Trojan.Brisv.A!inf , it is advised that you remove the Trojan.Brisv .a.! You can do this manually but you can remove Trojan.Brisv.A!inf much easier if you use a Trojan.Brisv.A!inf removal tool.
Download Trojan.Brisv.A!inf Removal Tool
To learn more about this Trojan.Brisv.A!inf remover, visit this site: http://www.softpedia.com/get/Antivirus/Trojan-Brisv-A-inf-Removal-Tool.shtml