It is measles.
It didn't follow the usual pattern and we couldn't see the tell-tale signs so had convinced ourselves LG had a feverish cold.
Then yesterday, the 5th day of him being ill, the rash erupted.
So here's the deal.
We can call it Numerology 2.
90% of non-immune people who come into contact with measles will contract it themselves.
The most contagious times are 4 days before the rash appears and 4 days after.
The incubation period is 10-14 days.
FB's barmitzvah is in 13 days.
In other words, the timing couldn't possibly be worse.
G has swapped beds with LG who's in with me.
We've managed to get hold of the homeopathic preventative remedy and are dosing up FB.
And we're all washing hands in a way that even Lady Macbeth would consider excessive.
All of which could well be a case of shutting stable doors long after the horse has buggered off.
There's nothing more we can do. Except wait.
I anticipate a barrage of criticism along the lines of us being irresponsible parents for not having had our children vaccinated.
But in spite of everything I still think that was the right decision.
(G's not so sure.)
In the meantime, you won't be seeing much of me on the blog for a while.
I have a sick child to care for.