It's important to note that the Liberia outbreak was a strain with a particularly high survival rate as well as asymptomatic carriers. This is part of the reaso

It's important to note that the Liberia outbreak was a strain with a particularly high survival rate as well as asymptomatic carriers. This is part of the reason that it spread while most outbreaks tended to burn themselves out due to a much higher mortality rate (80-90% is not uncommon).