Macaque Monkey Bites and Scratches: A Guide for UK Travellers

For many British tourists visiting popular destinations in Southeast Asia, North Africa, or South India, encountering macaques at temples or beaches is a holiday highlight. However, macaque monkeys can be aggressive, particularly when food is involved. A bite or a deep scratch from a primate is not merely a physical injury; it is a potential medical emergency due to the risk of zoonotic diseases.

According to National Travel Health Network and Centre (NaTHNaC) guidelines, monkeys are one of the primary carriers of rabies in regions like Bali, Thailand, and Morocco. Unlike domesticated pets, wild macaques have unknown vaccination statuses, meaning any break in the skin must be treated as a potential exposure. Beyond rabies, macaques can carry the Herpes B virus (Cercopithecine herpesvirus 1), which, while rare, can lead to severe neurological complications if not managed immediately.

If you are bitten or scratched by a monkey, you must act within minutes to reduce the viral load in the wound. Following NHS and NICE guidance, travellers should carry out the following:

• Flush the wound: Immediately wash the area with soap and plenty of clean, running water. This should continue for at least 15 minutes.
• Disinfect: After thorough washing, apply a disinfectant such as 70% alcohol or povidone-iodine if available in your travel kit.
• Cover: Use a simple sterile dressing to protect the wound while seeking medical attention.
• Seek Local Care: Regardless of your UK vaccination status, you must visit a local clinic for an assessment of the need for Post-Exposure Prophylaxis (PEP).

Many UK travellers believe that having their pre-travel rabies jabs makes them immune. This is a common misconception. The pre-travel vaccine course simplifies treatment after a bite, but it does not eliminate the need for follow-up care. If you were vaccinated before your trip, you will likely need two further doses of the vaccine.

What if I wasn't vaccinated?

If you have never received a rabies vaccine, the treatment is more intensive. You will generally require a course of four or five vaccines, and potentially Rabies Immunoglobulin (HRIG), which provides immediate antibodies. HRIG is often in short supply in developing countries, emphasizing the importance of speaking to a medical professional as soon as possible after the incident.

Macaque monkeys are natural hosts for the Herpes B virus. In monkeys, it causes mild symptoms similar to human cold sores. However, in humans, the virus can travel to the central nervous system. Early symptoms include small blisters at the bite site, fever, or tingling sensations. Because of this risk, doctors may occasionally prescribe a course of antiviral medication (such as valaciclovir) as a preventative measure following a deep macaque bite, especially if the wound was not washed effectively.

Aside from viral risks, monkey mouths are full of bacteria. Animal bites are 'dirty' wounds that frequently lead to cellulitis or abscesses. NICE Clinical Knowledge Summaries (CKS) recommend a low threshold for prescribing prophylactic antibiotics (often co-amoxiclav) for animal bites to the hands or face, or deep puncture wounds. Furthermore, your doctor will check your Tetanus status to ensure you are fully protected, as animal bites are a known route for tetanus spores to enter the body.

Once you return to the UK, you may have ongoing concerns about the healing process or the legitimacy of the care you received abroad. You should speak to a GP online if:

• You were bitten abroad but did not receive a full course of follow-up vaccinations.
• The wound site is showing signs of infection, such as increasing redness, warmth, swelling, or pus (oedema).
• You feel generally unwell, have a fever, or are experiencing strange sensations like tingling or itching near the site of the bite.
• You require a clinical review of your travel records to ensure your UK immunisation history is updated correctly.

Our clinicians can provide a calm, evidence-based review of your situation, advising on whether further physical assessment is required or if a course of antibiotics is necessary to treat a secondary skin infection.