As much as I have been able to glean these are the med groups involved:
WHO (are these actually Drs or just pols?)
Medicins sans frontieres
CDC team
and a reported South Africa specialist on the way
I see a lot of complaints about the media numbers and the way WHO is counting, but Angola is not a great place to operate. It's a place that has a 25% child mortality rate even before this outbreak. It's a place where you die from a lot of nasty things. Malaria has already killed more people this year there than Marburg has.
People have already learned that taking a relative to the hospital means never seeing them again. The official numbers, using confirmed tests, are obviously going to be undercounts. I'd rather have that than overcounts. We can still judge the trend using media and WHO reports.