Rats prefer to move around a building when all is quiet, and they can move around in secret. There are times when this is not possible, and they may come into contact with people. Many times, they are going to remove themselves from the area, but there are other times when they feel the need to defend themselves and will result in a rat bite.
Rat bites can be shallow or deep, with a single puncture or multiple puncture wounds, it all depends. Bites can cause pain, redness, swelling, and in some cases cause a secondary infection. This secondary infection will cause the wound to become pus-filled and require medical attention.
It is well-known that rats are the carriers of major diseases. It is not common, but bites can result in diseases like leptospirosis, Hantaviruses, rat bite fever, and even tetanus infections. Though these are rare, every bite should be treated as if they are going to cause an infection. They should be cleaned and disinfected immediately.
Anytime a person is bitten by a wild animal, they should seek medical attention. This is going to mitigate any possible serious infections or reactions to the bite. People who think they may have an infestation should call in professionals because this will also reduce their bite risk as well.