As of version 2.0, NOD32 supports a file quarantine system.

In most cases, NOD32 is capable of cleaning infected files. In cases where an infected file cannot be cleaned, you may send it to our labs for detailed analysis. The quarantine folder is a convenient location to store infected or suspicious files in a benign form. (That is, in a form that can't be executed.) The location of the quarantine directory is set by default, but it can be changed in the Extended Tab of the NOD32 System Setup page.

Note that in many cases (especially with Win32 worms), the “infected” file is just the body of the worm. Since a file of this type contains no useful data, it is simply deleted instead of cleaned.