Rabies Immunoglobulin: When Is It Needed?

Rabies immunoglobulin is generally needed after a high risk animal exposure in someone who has never completed a rabies vaccination series. It provides immediate protection while the rabies vaccine helps the body develop its own longer lasting immune response.

An animal bite, deep scratch, or contact between animal saliva and broken skin should never be ignored. Rabies can be prevented when post exposure treatment is started promptly, but the disease is almost always fatal after clinical symptoms appear. Anyone exposed to a potentially infected dog, cat, monkey, bat, or other mammal should therefore seek medical assessment without delay.

What Is Rabies Immunoglobulin?

Rabies immunoglobulin, commonly shortened to RIG, is a preparation containing antibodies that can immediately neutralize the rabies virus near the exposure site. It is used as part of rabies post exposure prophylaxis rather than as a routine preventive treatment.

Unlike the rabies vaccine, immunoglobulin does not require the body to produce antibodies first. Its purpose is to provide temporary protection during the early stage of treatment until the vaccine stimulates a sufficient immune response.

RIG and Rabies Vaccine

Rabies immunoglobulin and the rabies vaccine have different functions, but they may be used together after a serious exposure.

Rabies immunoglobulin provides passive immunity. This means the patient receives antibodies that are already prepared and ready to work. The rabies vaccine provides active immunity by teaching the immune system to recognize and respond to the virus.

For previously unvaccinated patients with a qualifying exposure, treatment may include:

• Immediate wound washing
• Rabies immunoglobulin
• The first rabies vaccine dose
• Additional vaccine doses on scheduled dates
• Tetanus protection when clinically required
• Antibiotics or wound management when indicated

Mobile Medicine provides rabies vaccines and rabies immunoglobulin through its Vaccination Center in Bali. A medical assessment is needed to determine which parts of post exposure treatment are appropriate.

When Is RIG Needed?

Rabies immunoglobulin is mainly recommended for people with a severe or category III exposure who have not previously completed an approved rabies vaccination series.

Category III exposure may include:

• One or more bites that break the skin
• Scratches that penetrate or cause bleeding
• Animal saliva entering an open wound
• Saliva contacting the eyes, mouth, or nose
• An animal licking damaged or broken skin
• Direct exposure to a bat
• Deep wounds on the face, neck, hands, or fingers

The wound does not need to look infected for rabies treatment to be necessary. The decision is based on the type of exposure, the animal involved, the location of the wound, local rabies risk, and the patient’s vaccination history.

Understanding Exposure Categories

Medical professionals commonly divide potential rabies contact into three categories.

Category I: includes touching or feeding an animal and being licked on intact skin. Rabies post exposure treatment is generally not required when the skin is completely unbroken.

Category II: includes minor scratches or abrasions without bleeding and nibbling on uncovered skin. These exposures generally require immediate rabies vaccination, but rabies immunoglobulin is not routinely required.

Category III: includes bites or scratches that break the skin, saliva contacting a mucous membrane or damaged skin, and direct bat exposure. Immediate vaccination and rabies immunoglobulin are generally recommended for previously unvaccinated patients.

A doctor must evaluate the incident because patients may underestimate a small puncture wound, shallow scratch, or saliva exposure.

Who May Not Need RIG?

Rabies immunoglobulin is generally not given to people who previously completed a recognized rabies pre exposure or post exposure vaccination series.

Previously vaccinated patients may still require urgent medical assessment, wound cleaning, and additional vaccine doses after exposure. However, their treatment schedule is usually different because their immune system has already been introduced to the rabies vaccine.

Bring any available vaccination records to the appointment. Information about the vaccine name, number of doses, administration dates, and country where it was received can help the doctor determine the appropriate next steps.

When Is RIG Given?

Rabies immunoglobulin is normally administered once, near the beginning of post exposure treatment. Whenever medically possible, it should be provided during the first visit together with the first rabies vaccine dose.

When immunoglobulin was not available during the initial appointment, a doctor may still consider giving it within a limited period after the first vaccine dose. Patients should not delay treatment while attempting to arrange the entire course independently. Begin with professional medical assessment as soon as possible and follow the prescribed schedule.

Rabies immunoglobulin and the first rabies vaccine dose must be administered correctly and at separate anatomical sites. This treatment should only be performed by a qualified healthcare professional.

How RIG Is Administered?

The healthcare professional will calculate the appropriate amount of rabies immunoglobulin based on the patient’s body weight and the product being used.

As much of the recommended amount as medically appropriate is placed into and around the wound so the antibodies can act directly at the possible entry point of the virus. When there is remaining immunoglobulin, it may be administered at a location away from the rabies vaccine injection.

Rabies immunoglobulin must not be mixed with the vaccine in the same syringe or administered at the same injection site as the first vaccine dose.

What to Do First?

Immediately wash every bite and scratch thoroughly with soap and running water for at least 15 minutes. An iodine containing or other suitable antiseptic may be applied afterward when available.

After cleaning the wound:

1. Avoid covering it tightly without medical advice.
2. Do not apply herbs, coffee, oil, or other traditional remedies.
3. Do not wait for pain, swelling, fever, or neurological symptoms.
4. Record when and where the incident happened.
5. Identify the animal species without attempting to catch it.
6. Arrange a medical assessment immediately.

Patients who require cleaning, dressing, or further evaluation can also review Mobile Medicine’s wound treatment service. Deep wounds, severe bleeding, major tissue damage, or injuries involving nerves and tendons may require hospital treatment.

Animal Observation Is Not Enough

A dog or cat may appear calm and healthy at the time of the bite. This does not allow the patient to determine independently that treatment is unnecessary.

In some circumstances, a healthy domestic dog or cat may be observed by qualified authorities or veterinary professionals. However, observation should not delay initial wound care and medical assessment, especially in an area where rabies is present or when the animal cannot be reliably monitored.

Avoid attempting to capture, touch, or harm the animal. Instead, provide the doctor with details about its appearance, ownership status, behaviour, and location.

Possible Side Effects

Rabies immunoglobulin may cause temporary discomfort, tenderness, swelling, or redness around the administration area. Some patients may also experience mild systemic reactions.

Severe allergic reactions are uncommon but require immediate medical care. Inform the medical team about previous reactions to immunoglobulin products, known allergies, current medications, pregnancy, immune disorders, and other relevant medical conditions.

The danger of untreated rabies exposure is significantly greater than the usual temporary discomfort associated with properly administered post exposure treatment.

Treatment in Bali

Travelers and residents who experience a dog bite, monkey scratch, or another potential rabies exposure should arrange medical care immediately. Do not wait until the end of a holiday or until returning to another country.

Mobile Medicine’s home care vaccination service can provide rabies vaccination and rabies immunoglobulin at a hotel, villa, or residence under medical supervision. Availability and the appropriate treatment must be confirmed through an initial assessment.

Visit the Mobile Medicine contact page to arrange assistance. Serious wounds, uncontrolled bleeding, loss of movement, major facial injuries, or other emergency symptoms should be treated at a hospital immediately.

WhatsApp: +62 812 5263 8533

Rabies Immunoglobulin FAQs

Is rabies immunoglobulin the same as the rabies vaccine?

No. Rabies immunoglobulin supplies immediate antibodies, while the vaccine stimulates the body to develop its own immune response. Previously unvaccinated patients with category III exposure may require both.

Do all animal scratches require immunoglobulin?

No. Minor scratches without bleeding may be classified as category II exposure and generally require vaccination rather than immunoglobulin. Scratches that penetrate the skin or bleed may be category III and should be assessed immediately.

Can previously vaccinated people receive immunoglobulin?

Rabies immunoglobulin is generally not recommended for people who have completed a recognized rabies vaccination series. They may still need wound care and additional vaccine doses after exposure.