Are Ebola and Marburg related? What would happen if the two occurred simultaneously in a population?
Marburg and Ebola are sisters. They are both filoviruses, and look and behave almost identically. The difference is in the genetic material. They both have 7 similar proteins, although Ebola has an 8th protein that Marburg does not have, because one of the genes of Ebola codes for two proteins (usually, one gene codes for one protein).
I think if they both appeared in a population, the control measures would be the same. I would guess that a person infected with both would have a decreased chance of survival—that is purely a guess.