The typhoid vaccine does not give complete protection, but it cuts your risk substantially. In clinical trials, a single Vi injection prevented around two-thirds of cases in the first year, while the oral course prevented about half over three years. That typhoid vaccine protection rate is worth having, but it is not a substitute for careful eating and drinking.
How Effective Is the Typhoid Vaccine?
Typhoid vaccine prevent roughly half to two thirds of cases, according to a Cochrane review of randomised trials. Protection varies by vaccine type. Vaccine efficacy means the percentage reduction in cases compared with unvaccinated people.
Typhoid Vaccine Protection Rate by Type
Protection differs between the injection and the capsules, and the figures come from trials in countries where typhoid is common.
- Vi injection (single dose): about 69% protection in year one and around 55% cumulative protection over three years.
- Ty21a capsules (three doses): about 50% protection over three years.
Typhoid Booster Effectiveness and Duration
Protection fades over about three years, so the NHS recommends boosters every three years if you remain at risk. Regular travellers, such as those visiting family in South Asia, should not let it lapse.
Who Benefits Most from the Typhoid Vaccine?
Anyone travelling where typhoid is common, particularly parts of South Asia and Africa, benefits most. Check your destination on TravelHealthPro.
- Travellers visiting friends and relatives.
- Backpackers and long-stay travellers.
- People staying in rural areas or eating street food.
Typhoid can cause high fever, stomach pain and serious complications if untreated. Even partial protection lowers your odds of falling ill, which makes vaccination a sensible, low-effort precaution.
How and When Should You Have the Typhoid Vaccine?
Have it ideally at least one month before travel, though it can be given closer to departure if necessary.
Injection or Capsules?
The Vi vaccine is a single injection, while Ty21a is three capsules taken on alternate days. Capsules are not usually recommended under five years, whereas injections suit children from two.
Do You Still Need Food and Water Precautions?
Yes. Neither typhoid vaccine is 100% effective, so the NHS recommends taking care with food and water while travelling. Typhoid spreads through contaminated food and water.
- Drink bottled water with a sealed cap, or boiled water.
- Avoid uncooked fruit and vegetables unless they can be peeled or washed in safe water.
- Choose freshly cooked food served hot.
- Wash your hands before eating.
Are There Any Side Effects?
Side effects are usually mild and can include soreness, redness or swelling where the injection was given. The NHS states that about 1 in 100 people develop a high temperature.
Who Should Check Before Having the Typhoid Vaccine?
Most people can have a typhoid vaccine, but it may not be suitable for everyone. Tell your pharmacist if you have had a serious reaction to a previous dose or any of its ingredients, or if you are pregnant, breastfeeding or have a condition that affects your immune system. Your pharmacist can check your circumstances and advise whether vaccination is appropriate.
Get Your Typhoid Vaccine Before You Travel
Looking for a typhoid vaccine in Stoneleigh or Richmond? Our Nima Pharmacy team will check your destination, vaccination history and booster dates, then explain your options clearly. Do not leave it until the last minute. Book your appointment today and travel with confidence.
Frequently Asked Questions
How effective is the typhoid vaccine?
It prevents roughly half to two thirds of typhoid cases, depending on the vaccine type, according to a Cochrane review of trials. It is not 100% effective, so food and water precautions still matter.
How long does the typhoid vaccine last?
Protection lasts around three years, according to the NHS. If you continue to travel to higher risk areas, a booster is recommended every three years.
Do I need a typhoid booster?
Yes, if you remain at risk. With the Vi injection, a booster is a single dose, while capsule schedules differ, so your pharmacist will confirm the right one for you.
Can I still catch typhoid after vaccination?
Yes, because no typhoid vaccine gives complete protection. Safe water, thoroughly cooked food and regular handwashing reduce your risk further.
Is the typhoid vaccine free on the NHS?
The NHS says it is usually free from GP surgeries for travel. If you prefer a quicker appointment, our team can talk you through private options.
Can I have typhoid and hepatitis A vaccines together?
Yes, they can usually be given at the same visit. They are separate injections, as the combined hepatitis A and typhoid vaccine has been discontinued in the UK.