What is the passive immunization treatment for rabies?

The passive immunization treatment for rabies involves the use of rabies immunoglobulin. This is administered to provide immediate, short-term immunity in cases of potential rabies exposure, such as after a bite from an animal suspected of carrying the virus. Rabies immunoglobulin contains antibodies that can neutralize the rabies virus, thus offering protection while the body begins to develop its own immune response.

In rabies post-exposure prophylaxis, the use of rabies vaccine is essential as well, but it serves as a form of active immunity. The vaccine helps the body to build up its own immune response over time, whereas immunoglobulin provides instant protection.

Other treatments mentioned, such as antiviral medication, do not play a role in rabies treatment in the context of post-exposure prophylaxis. Antirabies serum may sound similar but is not typically referred to in standard medical practice, as the term "rabies immunoglobulin" is the accepted terminology for passive treatment. Thus, the choice of rabies immunoglobulin is precisely aimed at achieving immediate neutralization of the virus following potential exposure.