Crisis in the Red Zone: The Story of the Deadliest Ebola Outbreak in History, and of the Outbreaks to Come

by Richard Preston

In the case of the hot Ebola, the Makona strain, one amino acid was different in the protein of the soft knob. In the wild Ebola, the Meliandou Ebola, the amino acid was alanine. It got changed to a different amino acid, valine, in the Makona strain.