If you have been bitten by a rat and are bleeding, you need to be vaccinated against rabies, as rats can carry the rabies virus in their bodies. Rabies virus has a wide range of hosts, not only cats and dogs can carry rabies virus, horses, cows, sheep, rabbits, rats and so on may also carry the rabies virus, but the chance of carrying it is smaller than that of dogs. Rats are most likely to carry hantavirus, which can cause hemorrhagic fever with renal syndrome when infected, and vaccination against hemorrhagic fever is usually required before keeping rats or engaging in related work such as field labor. However, when exposure occurs, that is, after being bitten by a rat, then the significance of the hemorrhagic fever vaccine is not great, and cannot achieve the role of preventing hantavirus infection, then you need to be vaccinated with rabies vaccine and anti-rabies immunoglobulin, which can prevent rabies virus infection. Bleeding from a rat bite requires active medical attention, treatment of the wound as prescribed by the doctor, and vaccination according to schedule.