Would the sand flea bites show up 1-4 days after we leave the resort? We were there 2 weeks and she had no spots while there. We did spends a good 2-4 hrs a day in the sand :-) I would totally accept this diagnosis, it just seems odd the timing of the spots.

Her last vaccines where at 18months (5months ago) so wouldn't be that. I looked at measle pics and I am pretty sure it isn't that (thank goodness)!