The Typhoid Vaccine Decision: Why Your Destination Matters More Than You Think

No country formally requires a typhoid vaccine for entry, but in Pakistan, Bangladesh and India the risk is high enough that skipping it is a genuine gamble.

Typhoid and travel: why destination is everything

No country formally requires a typhoid vaccine for entry, unlike yellow fever, which has official certificate requirements at dozens of borders.^[1] That distinction shapes how most travellers think about it, and it is exactly where they go wrong.

This article covers which specific destinations carry meaningful typhoid risk, what drug-resistant strains mean for travellers right now, how effective the vaccines actually are, and how to think through the decision for your particular trip.

Medical disclaimer: This article is for informational purposes only and does not constitute medical advice. Typhoid vaccine recommendations depend on your specific itinerary, health history, and travel style. Consult a travel medicine clinician or your doctor before travelling, ideally at least six weeks before departure.

The highest-risk destinations for typhoid

Risk is not evenly spread. More than 70% of typhoid fever cases in returned travellers originate from South Asia, primarily Bangladesh, India, and Pakistan. That concentration tells you where to direct most of your attention.^[2]

Research using Australian surveillance data puts the crude incidence rate for countries in South Asia at 252 per 100,000 person-years of travel, with Bangladesh sitting at the top. For context, the risk in Thailand sits around 4.8 per 100,000 in the same dataset. That is roughly a 50-fold difference between destinations that many travellers lump together under a single "Asia" heading.^[3]

The CDC specifically recommends vaccination for travel to India, Pakistan, Bangladesh, Nepal, Sri Lanka, the Philippines, Indonesia, Vietnam, Cambodia, Laos, Nigeria, Ethiopia, Ghana, Kenya, Tanzania, Egypt, Mexico, Peru, Colombia, Ecuador and Bolivia, among other destinations. The list is long because the pathogen is genuinely widespread, but the gradient matters.

Pakistan and the drug-resistant typhoid problem

Pakistan deserves a separate paragraph. Since 2016, an outbreak of extensively drug-resistant (XDR) typhoid has been spreading from Sindh province. XDR strains do not respond to ampicillin, ceftriaxone, chloramphenicol, ciprofloxacin, or trimethoprim-sulfamethoxazole. Treatment options shrink to azithromycin and carbapenems.^[4]

Travel-associated XDR typhoid cases have since been documented in Canada, the United Kingdom, and the United States, all linked to travel to or from Pakistan. Canada's Public Health Agency issued a travel health notice for Pakistan that remains current as of October 2025. If you are travelling to Pakistan, vaccination is not a background option, it is the primary pre-travel intervention.

The XDR situation also raises the stakes for India and Bangladesh, which share land borders and trade routes with Pakistan. The CDC advises that travellers to Pakistan and neighbouring countries get vaccinated and follow safe food and water practices throughout their trip.

How effective the vaccine is

The injectable Vi polysaccharide (Vi-PS) vaccine and the oral Ty21a vaccine are the two types most commonly available to adult travellers. A newer typhoid conjugate vaccine (TCV) exists and is being rolled out in endemic countries. A Lancet meta-analysis found the pooled efficacy of a single TCV dose at 83% against culture-confirmed typhoid at two years post-vaccination.^[5] That is a strong result, though it is not 100%.

For XDR strains specifically, real-world studies in Pakistan and Zimbabwe found that TCV effectiveness against XDR Salmonella Typhi reached 97% in pooled analysis. That figure is notably higher than the overall typhoid number, which matters if you are heading to Pakistan.^[6]

The older Vi-PS injectable vaccine offers roughly 67% efficacy in year one. The oral Ty21a sits at around 45% efficacy over one to three years. Neither matches TCV, but both are meaningfully protective versus no vaccination at all.

One practical caveat: neither vaccine protects against paratyphoid fever, which is caused by related but distinct bacteria. Safe food and water practices remain essential regardless of your vaccination status.

Two vaccine types, two different trade-offs

The injectable Vi-PS vaccine requires one dose at least two weeks before travel. It protects for two years. It is the simpler option if your trip is coming up quickly.

The oral Ty21a vaccine is four capsules taken every other day. You must finish all four at least one week before travel. It protects for five years and avoids a needle. The catch: you cannot take it alongside antibiotics, and the schedule is easy to get wrong if you leave it late.

A third option, the TCV, is being introduced into national programmes in endemic countries but is not yet widely stocked in most travel clinics outside South Asia and Africa. Ask your travel clinician which formulations they carry.

Who actually needs it: the itinerary-specific view

Destination alone is not the whole picture. Travellers visiting friends and relatives in high-risk countries carry elevated risk because they tend to eat in local homes and avoid the bottled-water rules that resort-goers follow. The same Indian city carries a different risk profile depending on where you eat.^[7]

Three scenarios where vaccination is straightforward to justify:

Travel to India, Pakistan, Bangladesh or Nepal for any duration. Even stays of under a week in these countries have resulted in confirmed typhoid cases. The combination of high exposure risk and rising drug resistance makes vaccination the default position.

Street food itineraries in Indonesia, Vietnam, Cambodia, Laos or the Philippines. Urban restaurant dining with cooked food carries lower risk; eating at unrefrigerated market stalls or in rural areas raises it significantly.

Longer trips through sub-Saharan Africa, including Kenya, Tanzania, Nigeria, Ghana and Ethiopia. Risk in urban African centres is lower than South Asia but still above the threshold where vaccination has a clear benefit-to-cost ratio.

Two scenarios where the decision is more nuanced:

Short resort stays in Thailand or Mexico with no rural travel or street food. Risk exists but sits considerably lower than South Asia. Vaccination is still reasonable, but the decision depends on your specific itinerary and personal risk tolerance.

Transit through a high-risk country with no local food exposure. A layover in Mumbai with no time outside the airport does not carry the same risk as three weeks staying with a host family in Karachi.

Timing: the detail most travellers miss

The injectable vaccine requires at least two weeks before travel to reach protective levels. The oral series must be completed at least one week before departure. Neither works if you book them the week before you leave.^[1]

Canada's Public Health Agency recommends seeing a travel health clinician approximately six weeks before departure. That window allows time for the typhoid vaccine alongside any other recommended vaccines, such as hepatitis A, which shares a transmission route with typhoid. For more information about these other vaccines, see our travel vaccination checklist.

If you are already taking antibiotics for any reason, the live oral vaccine is contraindicated during that course. The injectable vaccine has no such interaction.

The vaccine does not replace food and water precautions

Typhoid vaccines are not 100% effective, and a large bacterial inoculum can overwhelm vaccine-induced immunity. That is the clinical way of saying that eating contaminated food in bulk still poses a risk even if you are vaccinated.^[8]

Vaccination acts as a safety net, not a green light for risky eating. Water purification and choosing fully cooked food served hot remain important practices on top of vaccination, not instead of it.

Keeping your records travel-ready

Once vaccinated, carry a record of the date and formulation. Some travellers use a medication passport or paper yellow booklet; others store it digitally. If you develop a fever during or after travel to a high-risk destination, that vaccination record helps clinicians rule out typhoid more quickly or investigate drug-resistant strains if the disease is confirmed.

Storing your vaccination history, alongside your current medications and allergies, in an International Patient Summary on Nomedic means that a clinician anywhere in the world can access the structured data immediately. That matters most when you are unwell and unable to recall the exact formulation or date of your typhoid vaccination.

Frequently asked questions

Is the typhoid vaccine required to enter India, Pakistan or Bangladesh?

No country requires proof of typhoid vaccination as a condition of entry. Unlike yellow fever, there is no certificate check at the border for typhoid. The vaccine is recommended by public health authorities including the CDC and WHO based on exposure risk, not enforced as an entry requirement.

Do I need a typhoid vaccine for Thailand or Mexico if I am staying in a resort?

CDC recommends the vaccine for Thailand and Mexico, but the risk is considerably lower than South Asia. A traveller staying in a resort, eating at established hotels and avoiding untreated water faces a much smaller exposure than someone eating at street stalls or staying with local hosts. Discuss your specific itinerary with a travel medicine clinician who can weigh the actual risk.

What is XDR typhoid and why does it matter for travel to Pakistan?

Extensively drug-resistant (XDR) typhoid is caused by a strain of Salmonella Typhi that does not respond to most standard antibiotics, including ciprofloxacin, ceftriaxone and chloramphenicol. An outbreak began in Pakistan's Sindh province in 2016 and travel-linked cases have since been confirmed in the UK, Canada and the United States. Vaccination with a typhoid conjugate vaccine has shown up to 97% effectiveness against XDR strains in Pakistan in real-world studies.

How long does the typhoid vaccine last before I need a booster?

The injectable Vi-PS vaccine requires a booster every two years for those who remain at risk. The oral Ty21a vaccine protects for five years. The newer typhoid conjugate vaccine has shown efficacy lasting at least four years in clinical trials in Malawi and Bangladesh. The right booster interval depends on which formulation you received.

Can I get typhoid even if I have been vaccinated?

Yes. No currently available typhoid vaccine offers 100% protection. The injectable Vi-PS vaccine is approximately 67% effective in year one; the oral Ty21a vaccine sits at around 45% over one to three years. Vaccination substantially reduces your risk but does not eliminate it, which is why food and water precautions remain essential throughout your trip.

Is it too late to get a typhoid vaccine if I leave in less than two weeks?

You may still benefit from the injectable Vi-PS vaccine up to two weeks before travel; it is the minimum recommended lead time. The oral Ty21a series takes longer: all four capsules must be finished at least one week before departure, so the series needs to start at least eight days out. If you are departing sooner, the injectable vaccine is the only viable option. See a travel clinician as soon as possible.