Klez problem recurring

I keep have recurrences each year of the same virus per NIS 

 

if NIS has quarantined it  , then why does it recur ?

 

I have run the fixklez  at safeboot  multiple times, and MBytes...

 

Category: Resolved Security Risks
Date & Time,Risk,Activity,Status,Recommended Action,Path - Filename


9/1/2013 9:12:10 PM,High,W32.Klez.H@mm detected by Virus scanner,Quarantined,Resolved - No Action Required,c:\users\xxxxxxxxx\appdata\roaming\thunderbird\profiles\sfsyyxh0.default\imapmail\imap.googlemail-1.com\zzztbird archive

 

height.bat

dt.fat

ie.pif 

 

etc