What are supposed to be the files in ..\virscan\BinHub

I have 41 files amounting to about 8.5 megs in my ..\virscan\BinHub folder. These files are named like the files in the yyyymmdd.rrr virus update files but their dates are ancient and don't correspond at all with the current or previous generation of virus updates. Are these files that the system forgot to clean up\delete, and which I can safely delete?

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Rostyk