[Sthitch]

Did Dr. Niman address why this outbreak is so much more deadly than previous Marburg outbreaks? In the past the mortality rate has been about 23%, with this one we are looking at less than 2% survivability rate.

[Judith Anne]

Not to me, but you might find an answer in one of the radio interviews he's given. They are archived, and there are links at his web site.

I tend to think that like many bugs, Marburg has changed, or this is a different branch of the Marburg family we've never seen before.

For instance, Ebola has several different strains, one of which is airborne but does not cause disease in humans, although it's fatal to monkeys. Ebola Reston, I think it is.