How does rabies infect the body of a mammal?

Rabies infects the body of a mammal through a bite or scratch from an infected animal. The rabies virus is present in the saliva of infected animals, and when the saliva comes into contact with a fresh wound or mucous membrane, the virus can enter the body.

Once the virus enters the body, it travels through the peripheral nerves to the central nervous system. The virus then multiplies in the brain and spinal cord, causing inflammation and damage to these tissues. This damage can lead to a variety of symptoms, including fever, headache, confusion, agitation, hallucinations, and paralysis.

In most cases, rabies is fatal once symptoms develop. However, there is a rabies vaccine that can be used to prevent the disease. The vaccine is most effective when given before exposure to the virus, but it can also be given after exposure to prevent the development of symptoms.