Marburg is very bad but from everything I’ve read it’s not quite as bad as ebola. That’s what the scientists say anyway.
Marburg may have been less dangerous, but with global warming who knows what may happen.
What a lot of people don’t realize is that an outbreak has the panic factor to consider. The Spanish Flu had a fatality rate of approximately 2.7 percent. But many more people died in addition to the fear and panic that someone they know possibly could be the unfortunate one who died. Given the amount of panic and chaos many of these African nations have, I wouldn’t be surprised if it becomes comparable to Ebola by adding on the panic of many people in the country doing irrational actions out of fear that someone they know or even themselves gets the unlucky death draw.
Case fatality rates have varied greatly, from 25 percent in the initial laboratory-associated outbreak in 1967, to more than 80 percent in the Democratic Republic of Congo from 1998-2000, to even higher in the outbreak that began in Angola in late 2004.
http://www.china.org.cn/world/Off_the_Wire/2014-10/05/content_33686011.htm