Mommary, I think there are two issues here, the virus and the Livial. The Livial is probably helping you to make up for all the lost sleep which you so desperately need. Then there is the virus, I had a virus last year and it took months for it to finally leave my system and I needed more sleep.
My mother hasn't slept properly for over 30 years now (since menopause) and is very badly deprived of sleep - it's really taken its toll on her health. When she went into hospital to have her hip replaced, they couldn't wake her up from the operation because it was the first time she had slept properly in ages. She is very lucky if she gets 5 hours sleep in one go.
This is why I am so pro-HRT, I don't want to end up with all the problems she has had.