Crossword Genius

Half a dozen Russians contract an infectious disease (5)


I believe the answer is:


I'm a little stuck... Click here to teach me more about this clue!

'disease' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for virus that I've seen before include "Infective particle" , "computer problem" , "Electronic threat" , "Hidden destructive code in a computer program, or cause of illness" , "Cause of infection (in people and computers)" .)

I've seen this clue in the Sydney Morning Herald.
Want a hint initially instead of a full solution? Install my app