Well you'd never guess it just by looking at him.
He's happy and playing as usual.
That is a chicken pox.
The chicken pox showed up last night, just a few faint dots. There are about 10 dots today. Other than sleeping a bit longer, Jake is perfectly fine. The pox don't even seem to be bothering him -- I haven't caught him scratching at them. Hooray for natural immunity and getting this over with...