1. Ebola is vulnerable outside the human body: it can survive for only a few hours in a dry environment. However, if it is in a room temperature environment and body fluids are not dry, it can survive for several days; 2, although the incubation period is 2-21 days, most people are 8-10 days; 3, once the symptoms appear, the patient has only 6-16 days to decide whether to live or die; 4, once survived, it can be immunized for at least 10 years. However, it is still unknown whether different strains can also be immunized.