Tetanus in Bali, and the wounds that count

NaTHNaC's tetanus advice on its Indonesia page starts with how it gets in: “Tetanus bacteria are present in soil and manure and may be introduced through open wounds such as a puncture wound, burn or scratch.” The disease is caused by a toxin those bacteria release, and it occurs worldwide — Bali is not unusual for having it, only for how often people get the kind of wound it needs.

The prevention advice has two halves:

• Wounds: “Travellers should thoroughly clean all wounds and seek medical attention for injuries such as animal bites/scratches, burns or wounds contaminated with soil.”
• Vaccination: travellers should have completed a tetanus course according to the UK schedule, and “if travelling to a country or area where medical facilities may be limited, a booster dose of a tetanus-containing vaccine is recommended if the last dose was more than ten years ago even if five doses of vaccine have been given previously.”

Source: NaTHNaC — Indonesia country information, read 6 October 2026.

NaTHNaC's list — puncture wounds, burns, scratches, animal bites, soil-contaminated wounds — reads like an inventory of ordinary island life:

• Scooter falls. Road rash ground into a roadside verge is exactly a soil-contaminated wound, and so is an exhaust burn on the calf.
• Reef and rock cuts. Coral grazes and cuts from rocks on the way into the sea.
• Garden and building work. A nail through a sandal, a scrape from a garden tool — puncture wounds in soil.
• Animal bites and scratches, which NaTHNaC names directly.

None of these is dramatic, which is the problem. They are the injuries people clean with a bottle of water and forget. NaTHNaC's instruction is to clean all wounds thoroughly and to get the soil-contaminated ones and the bites seen.

Animal bites and scratches carry a second, separate risk in Indonesia — our rabies in Bali guide covers that one.

NaTHNaC's booster rule is specific, and it surprises people who believe they are fully vaccinated. Where medical facilities may be limited, a booster is recommended if your last dose was more than ten years ago — even if you have had five doses before.

So the question is not “have I had tetanus jabs?” but “when was the last one?” Most adults cannot answer that without checking their records. That makes it a pre-departure task: find the date, and if it is more than ten years back, talk to a clinic.

NaTHNaC points travellers to the health section of the UK Foreign Office's travel advice for information on medical facilities in a given country. Whether Bali counts as limited depends on where you live and how far you are from a hospital — a villa an hour into the hills is a different answer from a flat near Denpasar.

Treatment of an injury after you arrive is what a health plan is for, and emergency room treatment is covered on every plan we arrange.

Two limits matter on this page. The booster is usually your cost: vaccinations are not covered on Major Medical or Standard, with US$250 at 25% co-insurance on Comprehensive and US$500 on Fully Comprehensive, limited to travel-requirement vaccinations. And the policy wording excludes claims connected with failing to get required inoculations or vaccinations.

If the wound came from a scooter, there is a third. The wording excludes two-wheeled motor vehicle use unless you wore a helmet, held the right licence and had valid motor insurance with personal-injury cover — as rider or passenger. Our scooter accidents guide covers what that means in Bali. The cover we arrange is worldwide — the United States is the one exception — and pre-existing conditions are excluded.