The survival time of rabies virus depends on the specific environment. Rabies viruses are sensitive to stimulation by external physical and chemical factors and cannot survive for too long. If the rabies virus is present in natural conditions, it can be rapidly inactivated by daylight or sunlight. Therefore, the transmission of rabies from a dog saliva to a person through indirect objects under natural conditions is generally not considered clinically because the possibility is very small. Rabies virus is rapidly inactivated in boiling water at 100 degrees Celsius, and in a suspension at 56 degrees Celsius for 30-60 minutes. So, overall the rabies virus is relatively fragile. However, there are ways to preserve rabies virus in humans, and at a more appropriate temperature, with human albumin or serum as the culture medium, rabies virus can survive for a long time. The rabies virus can also be preserved if it is kept alive under frozen conditions.