If it turns out to be correct regarding the case in France in December we could assume that many more people had it. If this guy went to hospital on the 27th Dec he could have contracted it say 10 days before. Could have been similar cases here.

It would have spread like wildfire before Christmas. Look how rammed the pubs are on mad Friday and Christmas/New year's eve, shops are full. Christmas Day, everyone's spreading it to their families.

Quite a few of people I know were badly over Christmas. Couldn't get out of bed. Even more in January.

It will be interesting to see the death rate for January.

We could have already achieved the required herd immunity.