Below is an instruction from Human. Write a response.
    ### Instruction:
    how is rabies diagnosed?
    ### Response:
    In animals, rabies is diagnosed using the direct fluorescent antibody (DFA) test, which looks for the presence of rabies virus antigens in brain tissue. In humans, several tests are required.
 
Rapid and accurate laboratory diagnosis of rabies in humans and other animals is essential for timely administration of postexposure prophylaxis.
    