Rabies Immunoglobulin: Identifying the Incorrect Statement

This question asks to identify the statement about Rabies Immunoglobulin (RIG) that is NOT true in the context of post-exposure prophylaxis (PEP) for rabies.

Evaluating Rabies Immunoglobulin Administration Statements

Rabies Immunoglobulin provides passive immunity, offering immediate protection, while the anti-rabies vaccine provides active immunity that develops over time. Understanding their correct usage is crucial.

• Option 1: Administered once as soon as possible. This is true. RIG should be given concurrently with the first dose of the vaccine, ideally infiltrated around the wound site(s) as soon as PEP is initiated.
• Option 2: Administered all into or around wound sites. This is true. Local infiltration of RIG into and around all wounds that are candidates for closure is the recommended method to maximize local protection.
• Option 3: No scientific ground for skin test with equine immunoglobulin. This is generally true. Pre-testing for hypersensitivity reactions is often not recommended or necessary for modern equine rabies immunoglobulin preparations, unlike older antisera.
• Option 4: Can be administered till 15 days after the first dose of anti-rabies vaccine. This statement is NOT true. Rabies Immunoglobulin is administered only at the time of the *first dose* of the anti-rabies vaccine. It should not be given late in the vaccination course, as its purpose is immediate passive protection before the vaccine induces active immunity. Delaying RIG administration beyond the initial PEP initiation negates its primary benefit.

Conclusion on Rabies Immunoglobulin Use

Based on standard rabies prophylaxis guidelines, Rabies Immunoglobulin is a one-time passive immunization given alongside the initial vaccine dose. Therefore, the statement that it can be administered up to 15 days after the first vaccine dose is incorrect.