HELP!! Flea bites or Chicken Pox??

MamaSquishyB

My dog has fleas.  We've been doing everything we can to get rid of them (medicine, flea baths, vaccumming, etc) and I thought we were making good progress.  I only saw 1 flea yesterday.  Then, my son woke up this morning with bites ALL OVER his body.  I thought they were flea bites, but there are SO many of them.  I'm beginning to wonder if they are chicken pox.

Does this look like chicken pox, or flea bites?  This is his right side.

 

He has them all over his body, but the majority of them are on his midsection (tummy, sides, and back).  He also has them on his arms and legs, chest, and a few on his face.

Can he get chicken pox, even though he's had the vaccine?

I had an activity planned with him for this afternoon, but now I'm wondering if we should cancel.  This is so frustrating!!