RABIES HUMAN MONOCLONAL ANTIBODY

Background and Date of Approval

Rabies human monoclonal antibodies are a category of immune globulins.

Uses

Rabies human monoclonal antibodies (RMAbs) primarily provide immediate passive immunity to individuals exposed to the rabies virus, particularly in high-risk situations.

How is it administered?

Rabies human monoclonal antibodies are primarily administered intramuscularly, typically at the site of the potential rabies exposure. The best route of administration depends on the individual's needs and preferences, but oral administration is typically the most convenient.

Side Effects

Common side effects of Rabies human monoclonal antibodies may include localized reactions at the injection site, such as pain, swelling, redness, and a low-grade fever. Serious side effects are rare but may involve severe allergic reactions (anaphylaxis) that can result in symptoms like difficulty breathing, facial or throat swelling, hives, and a drop in blood pressure.

Warnings

Rabies human monoclonal antibodies may risk severe allergic reactions, including anaphylaxis, which can be life-threatening. Some individuals may experience a mild increase in body temperature (low-grade fever) as a common side effect.

Precautions

Assess the patient's history of allergies, particularly any components of Rabies human monoclonal antibodies or previous reactions to monoclonal antibody therapies. Administer it promptly after potential rabies exposure, as delay can reduce their effectiveness.

Word of Advice

Confirm the patient has no allergy to rabies human monoclonal antibody or its components, and has not previously experienced adverse reactions to similar treatments. Administer promptly following potential rabies exposure, as delays reduce efficacy. Evaluate the patient's clinical status carefully, particularly immune competence, as immunosuppression may compromise treatment response. Weigh risks and benefits carefully when considering use during pregnancy or lactation. Monitor the patient closely during and after administration, especially if other medical conditions are present. Establish whether the patient has received prior rabies vaccination, as this agent is typically used concurrently with rabies vaccine series. In cases of multiple potential rabies exposures, consider administering additional doses. For paediatric or elderly patients, consider age and body weight when determining dosage.

References

Sudarshan MK. World Health Organization 2018 Guidelines on Rabies Prophylaxis: Contentious Issues. Pediatr Inf Dis 2019;1(4):154–156, https://www.pidjournal.com/doi/PID/pdf/10.5005/jp-journals-10081-1226 Thomas Moulenat et al., Purified Vero Cell Rabies Vaccine (PVRV, Verorab®): A Systematic Review of Intradermal Use Between 1985 and 2019, Trop. Med. Infect. Dis., 2020, 5, 40, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7157209/pdf/tropicalmed-05-00040.pdf Serum Institute of India Pvt Ltd, [Revised on 2021] [Accessed on 10th Oct 2023], https://www.seruminstitute.com/product_ind_rabishield.php Anwith, H S & Ravish, Haradanahalli & Ashwathnarayana, Doddabele, Safety of new indigenous human Rabies Monoclonal Antibody (RMAb) for Post Exposure Prophylaxis, Indian Journal of Community Health, 2018, 30, 196-201, https://www.researchgate.net/publication/328743661_Safety_of_new_indigenous_human_Rabies_Monoclonal_Antibody_RMAb_for_Post_Exposure_Prophylaxis_Corresponding_Author_Citation_Article_Cycle

Frequently Asked Questions

What are the common side effects of Rabies human monoclonal antibodies?

Common side effects may include pain at the injection site, swelling, redness, and low-grade fever.

Can Rabies human monoclonal antibodies completely replace rabies vaccinations?

No, Rabies human monoclonal antibodies are typically used with rabies vaccinations. While Rabies human monoclonal antibodies provide immediate protection, vaccinations are necessary to stimulate the person's immune system for long-term immunity.

Are Rabies human monoclonal antibodies effective against all strains of the rabies virus?

Rabies human monoclonal antibodies are designed to be effective against various rabies virus strains. They are selected for their ability to neutralize the virus, protecting in most cases.

How quickly should Rabies human monoclonal antibodies be administered after a potential rabies exposure?

To maximize their protective benefits, Rabies human monoclonal antibodies are most effective when given as soon as possible after exposure, ideally within hours or days.

What happens if someone misses a dose of Rabies human monoclonal antibodies or a scheduled rabies vaccination during the PEP process?

It's important to follow the prescribed schedule and not miss any doses. If a dose is missed, consult with a healthcare provider to determine the appropriate course of action, which may include additional doses.

Are there long-term side effects associated with Rabies human monoclonal antibodies?

Long-term side effects of Rabies human monoclonal antibodies are not common. Side effects, if they occur, are typically short-term and mild.

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Written By: Muskan Patel, M.Pharm

Reviewed By: Dr. Vishwa Patel, MBBS