Dd2 (6) has been very feverish and tired today but has eaten a few bits. I just put her up to bed and noticed one single tiny blister on her shoulder. I touched it and it burst (and I washed my hands!). She has another on her back and the makings of one on her cheek but that's it.
When dd1 had it (about 7 years ago) she was covered, and it was a rash before it turned to blisters. It's not itchy either.
The pox?