Experimental infection of rhesus and vervet monkeys with Ebola virus produced a uniformly
fatal illness. The course of the disease resembled that found in man with weight loss,
anorexia, fever, haemorrhages and skin rash being frequently seen. Viraemia was obvious
within two days of infection and persisted until death which occurred between days five and
eight. Virus was found in high concentrations in several organs but particularly in the liver,
spleen and lungs.