David - sorry to hear you've not shaken it yet. There is plenty of time for your recovery, and knowing you, you'll bounce back stronger.
The other way to look at it is, you're still struggling because your body's not yet recovered. If you push on through illness, chances are you'll do yourself proper damage. So take it easy. Although, I also appreciate this probably doesn't fit with your job plan!
What Kaz said... 2 weeks. My Paris prep has been poor, I'm more looking forward to the RW meet-ups than the race.
Hope you're back to fighting fitness soon David.
Cheers,
Iain