Tetanus: Which Wounds Need Care, When Urgent

Key takeaways

Tetanus does not spread from person to person. The bacteria live in soil, dust and animal manure and get in through a break in the skin — the risk comes from your own wound, not from someone else who is ill.
Wash the wound straight away with clean water and soap under running water. Do not seal it and do not put leaf poultices on it. Then be seen the same day, bringing your vaccination record if you still have it.
What you need injected, and whether you also need tetanus antitoxin, is a doctor's decision after looking at the wound and asking about your vaccination history. Do not work it out at home.
Difficulty opening the mouth, a stiff neck, facial muscles in spasm, or spasms set off by noise or light mean the illness has already started — call 115, even if the old wound has healed and looks unrelated.

You have just stepped on a rusty nail, cut your hand on a rusty blade, or got soil into a wound — and the question is whether you need an injection. The honest answer: that is not a decision you can make at home.

Recognising it: which wounds are the high-risk kind

Not all wounds are the same. The bacteria that cause tetanus survive in enclosed, airless places, where there is clotted blood or crushed tissue — so a hole the width of a nail is more worrying than a long graze across the skin. The size of a wound says nothing about the danger.

Deep puncture wounds: a nail, a thorn, a wood splinter, a piece of rusty metal — a small opening with a deep track that washing cannot reach the bottom of
Wounds with soil, sand, dirt, animal manure, paddy water or drain water in them
Crushed wounds with a lot of dead tissue; wounds from machinery or road traffic accidents
Animal bites and scratches, including ones that look small
Burns, deep burns especially; wounds that are already infected or discharging pus
Long-standing ulcers that will not heal: diabetic foot ulcers, pressure ulcers from lying in bed
Wounds left a long time before being washed, or already covered with leaves or dusted with powdered medicine

Signs the illness has started: this is an emergency

Tetanus does not begin at the moment of injury. It arrives days later, once the wound has dried. That is why families often fail to connect the two: they see the person struggling to open their mouth and think of a wisdom tooth or a chill, and nobody remembers the nail from last week.

Difficulty opening the mouth — unable to open wide enough to eat, speech is hard, the jaw feels clamped shut; usually the first sign
Facial muscles in spasm, the face drawn into what looks like a smile but is not one
A stiff neck and a stiff back, unable to bend forward; severe aching in the shoulders and back
Difficulty swallowing, frequent choking
Spasms or convulsions in episodes, easily set off by noise, by light, or by being touched
Sweating and a fast heartbeat; spasm of the chest and diaphragm muscles causing difficulty breathing

What to do straight away after the injury

None of the steps below needs a prescription.

Wash your own hands first, then wash the wound with clean water and soap under running water, letting the water run for a while until all the soil and sand is gone.
Take out any foreign body that comes away easily. A foreign body embedded deep, a shard of glass, a nail still in the flesh — leave it where it is and go to hospital.
If it is bleeding, press clean gauze onto the bleeding point and hold it there; do not keep lifting it off to look.
Cover it with clean gauze, bandaged loosely enough for air to reach it; do not tape a deep puncture wound shut.
Write down the time of the injury and what caused it. Find your vaccination record if you still have it.
Be seen the same day. If you are not sure what you have been vaccinated against, go anyway and say clearly that you are not sure — that is information the doctor needs.

What NOT to do

Do not apply leaf poultices, powdered medicine, toothpaste, oil, grease, or somebody else's tube of ointment
Do not seal a deep puncture wound — an enclosed airless space is exactly where tetanus bacteria grow
Do not stitch it at home, do not pull out a deeply embedded foreign body yourself, do not squeeze out pus
Do not buy antibiotics yourself and treat that as the end of it — antibiotics do not replace assessing the wound and vaccinating against tetanus
Do not wait to see whether the wound becomes infected before being seen: tetanus is not a local infection, and the wound can still look clean and heal neatly
Do not decide for yourself that you were vaccinated as a child so you are covered — immunity does not last forever, and a doctor has to look at your vaccination history before anyone can say

What to inject, and whether antitoxin is needed: the doctor decides

This is the part we cannot write out in an article. Whether you need a tetanus vaccine, or also need tetanus antitoxin, depends on the type of wound and on your vaccination history at the same time — only a doctor who can see the wound and hear your account can put those two things together. We name them here so you recognise what you will be told at the clinic, not so you can choose for yourself. According to CDC, having had tetanus before does not make the body immune to it.

When you must go to hospital

Call 115 (the emergency number in Vietnam) or go to emergency care IMMEDIATELY if any of the signs of onset above are present — a clamped jaw, a stiff neck, spasms or convulsions in episodes, difficulty swallowing, difficulty breathing — or if a newborn is feeding poorly, crying weakly, or stiff. When you call, say clearly what kind of wound there was beforehand. BE SEEN THE SAME DAY if: it is a deep puncture wound, or you stepped on a nail · the wound is dirty with soil, sand, manure or dirty water · it is a crush injury, a burn or an animal bite · you are not sure of your vaccination history · the wound is on someone with diabetes, an older adult, someone with a weakened immune system, or a pregnant woman.

Below those two levels: a shallow, clean graze that was washed immediately, in someone whose vaccination history is clear, can be watched at home — be seen if swelling and pain increase, if pus appears, or if a red streak spreads out from it. A wound a hospital has already dealt with should be reviewed within the next one to three days, sooner if the pain increases or it starts discharging.

What can be done at home, and what has to happen at a medical facility

Plainly: tetanus vaccine and tetanus antitoxin are given at a medical facility, not at home; and tetanus that has already started belongs in intensive care. What we can do sits around the wound: hearing your account on a video consultation and telling you clearly whether this case needs to be seen, washing and changing dressings as prescribed once the hospital has dealt with it, and following up a long-standing ulcer.

According to CDC, the bacteria that cause tetanus are present in soil, dust and animal manure and enter the body through a break in the skin; CDC advises washing the wound with water and soap and then going to a medical facility for puncture wounds, deep wounds and dirty wounds, and treats tetanus that has already started as an emergency requiring hospital treatment. Source: CDC. Citing CDC here does not imply that CDC endorses Y Te Xanh or our services.

Need personalised advice for your loved one? Call our hotline 094 368 81 15 (24/7) — calling to ask a question or to book costs nothing. GreenCare has doctors who come to examine, nurses who carry out doctor's orders (injections, infusions, dressing changes), remote consultation by video call, and a review of the medicines you are taking; an in-depth remote consultation, or any one after the first, is a paid service. For children we take examination and acute care only — not long-term care at home, and not newborns or expectant mothers. We confirm we have staff in your area and provide transparent pricing before we begin.

Sources

CDC — About Tetanus

Frequently asked questions

I stepped on a rusty nail, the wound is tiny and barely bled — do I still need to be seen?

Yes. A small puncture wound is in fact the most worrying kind, because the opening is narrow so washing cannot reach the bottom, and that depth is airless — exactly the environment tetanus bacteria need. Wash it straight away with clean water and soap under running water, cover it with clean gauze but do not tape it shut, and be seen the same day. Bring your vaccination record if you still have it; if you are not sure, say you are not sure.

Once the wound has healed completely, is the tetanus risk over?

Not necessarily. The illness starts days after the injury, so the signs usually appear once the wound has dried and nobody is paying attention to it any more. If in the weeks after a wound the person has difficulty opening their mouth, a stiff neck, a stiff back, difficulty swallowing or spasms in episodes, call 115 and say clearly what kind of wound there was beforehand — do not wait to see whether it eases.

Does tetanus spread from person to person?

No. According to CDC, tetanus does not spread from person to person, so someone who is ill does not need to be isolated and family members do not catch it while caring for them. Each person's risk comes from their own wound together with whether they have been vaccinated. So within a household, the thing worth doing is not avoiding the person who is ill, but dealing properly with every dirty wound and every deep puncture.

I had the full course as a child — do I need another injection now that I am injured?

You may, and that is a decision for the doctor after looking at the wound together with your vaccination history. Immunity to tetanus does not last forever, so having been vaccinated as a child is not a reason to skip the appointment. Bring your vaccination record if you still have it; if you cannot find it, go anyway and say you do not remember — the doctor can still work with that.

Is hydrogen peroxide or alcohol better than soap for washing a wound?

The most useful thing is clean water with soap under running water, washed for long enough to carry away all the soil and sand — because what needs removing is dirt and foreign material. Alcohol and hydrogen peroxide sting, can damage more of the healthy tissue, and do not replace washing things out. Do not pour them into a deep puncture wound, and do not use them instead of being seen when a wound is dirty or deep.

Can a nurse come to the house to give the tetanus injection?

No. Tetanus vaccine and tetanus antitoxin are given at a medical facility, where there are the means to monitor and manage a reaction, so we do not do this at home. What we can do is what comes before and after: hearing your account so we can say clearly whether this case needs to be seen, then washing, dressing and following up the wound as prescribed once a facility has dealt with it.