Rabies generally cannot incubate for 50 years. Rabies incubation time is related to several factors, such as the site of the wound and the depth of the wound. The incubation period for rabies generally varies in length. About 30% of rabies incubation time is within 1 month, about 54% is within 1-3 months, 15% is more than 3 months, and only about 1% is more than 1 year. The longest incubation period for rabies cases currently recognized in official World Health Organization documents is 11 years. In China’s clinical literature can be seen in the so-called “rabies incubation period of up to 20 years” and other cases, but this type of case lacks sufficient evidence to prove that it is related to the first rabies exposure, some infectious disease medicine experts believe that these cases may be misdiagnosed or have a history of secondary exposure. There is no scientific basis for a 50-year incubation period for rabies, and the questioner is advised to live and work optimistically.