As far as I know, the international Red Cross pulled out of Burma several years ago, because they were not able to get access. I heard that within the last year, they sent a team to do a water and sanitation assessment of a prison. They also visited another prison. This is baby stepping into having more access.
I'm not completely knowledgeable about this. It is what I know to the best of my knowledge.
I would say that they probably do not.