Health
Vaccinations and health before you go
When to book, what it costs and how to take your medicines, then, for every country we cover, the vaccines the UK advises, malaria, yellow fever certificates and the rules on bringing medicines in.
This isn't medical advice. What you need depends on your health, your vaccine history and what you'll be doing. See a travel nurse, pharmacist or doctor 4 to 6 weeks before you go, and take this page with you.
Every country at a glance
| Country | For most travellers (UK advice) | Yellow fever certificate | Bringing medicines |
|---|---|---|---|
| PortugalLisbon | Tetanus. | Not needed | General rules |
| SpainBarcelona, Las Palmas | Tetanus. | Not needed | General rules |
| HungaryBudapest | Tetanus. | Not needed | Declare some medicines |
| GreeceAthens | Tetanus. | Not needed | Doctor's letter |
| MaltaValletta | Tetanus. | Only from risk countries | General rules |
| CroatiaSplit | Tetanus. | Not needed | General rules |
| GeorgiaTbilisi | Hepatitis A, tetanus and typhoid. | Not needed | Strict: check first |
| United Arab EmiratesDubai | Tetanus. | Only from risk countries | Approval for some |
| South AfricaCape Town | Hepatitis A, tetanus and typhoid. | Only from risk countries | One month's supply |
| ThailandBangkok, Chiang Mai | Hepatitis A and tetanus. | Only from risk countries | 30 days; permit for some |
| MalaysiaKuala Lumpur | Hepatitis A and tetanus. | Only from risk countries | One month's supply |
| IndonesiaBali | Hepatitis A, tetanus and typhoid. | Only from risk countries | Declare some medicines |
| JapanTokyo | Tetanus. | Not needed | Strict: check first |
| MexicoMexico City | Hepatitis A, tetanus and typhoid. | Not needed | Some medicines banned |
| ColombiaMedellín | Hepatitis A, tetanus and typhoid. | From some countries; carry it | Spanish prescription |
| ArgentinaBuenos Aires | Hepatitis A and tetanus. | Not needed | General rules |
| BrazilFlorianópolis | Hepatitis A, tetanus and typhoid. | Not needed; vaccine advised | Doctor's letter |
| Costa RicaSanta Teresa | Hepatitis A and tetanus. | Only from risk countries | Bring enough |
Everyone should also be up to date with routine vaccines, such as MMR and the diphtheria, tetanus and polio jab.
Before you go
When to book
- UK: the NHS says to get advice from a travel health professional at least 4 to 6 weeks before you go.
- US: the CDC says to see a healthcare provider at least 4 to 6 weeks before you leave.
- Some courses take weeks: a rabies course is usually 3 doses over 28 days in the UK, and yellow fever must be given at least 10 days before you travel.
- Check you're up to date with routine vaccines first, especially measles (MMR). In the UK you can see your record in the NHS App or ask your GP.
Sources: NHS: travel vaccinations, reviewed April 2026, CDC: travel vaccines
What it costs
- Free on the NHS in England, from your GP: hepatitis A, typhoid, cholera, and polio (given as the diphtheria, tetanus and polio jab).
- Usually paid for: hepatitis B, Japanese encephalitis, rabies, tick-borne encephalitis and yellow fever.
- Boots' prices, as an example: rabies £210 for 3 doses, Japanese encephalitis £210 for 2, hepatitis B £156 for 3, yellow fever £70.
- Boots also charges for hepatitis A, typhoid and cholera, so ask your GP first.
- US: the CDC says many health plans give no or limited cover for travel vaccines, so check yours.
Sources: NHS: which travel vaccines are free, Boots Travel Health Service, prices seen October 2026, CDC Yellow Book 2026
Yellow fever certificates
- The vaccine is only given at registered yellow fever centres (UK) or authorised clinics (US).
- It must be given at least 10 days before you travel, and the certificate is valid for life, including older ones with an expiry date on them.
- Several countries below don't have yellow fever but ask for a certificate if you arrive from a country that does. Flying straight from the UK or US, you won't need one.
- If you'll move between countries in South America, keep the certificate with you.
Sources: NHS: yellow fever vaccination, CDC: the yellow fever certificate
Taking your medicines
- Keep medicines in their original, labelled packaging, with a copy of the prescription or a letter from your doctor that gives the generic names.
- Rules differ by country, and some common UK and US medicines are banned in some of them. Each country below says what its rules are.
- UK: if a medicine contains a controlled drug, carry the prescription or a letter from your doctor, and check the rules with the embassy of the country you're going to. For 3 months' supply or more you may need a Home Office licence: email the Home Office (dflu.ie@homeoffice.gov.uk) at least a month before you go.
- UK: the NHS normally supplies up to 3 months of regular medicine for a trip. For longer stays, plan to get supplies where you are.
- US: the CDC says many countries allow a 30-day supply of certain medicines, and some insurers only pay for 30 days at a time.
Sources: TravelHealthPro: medicines and travel, October 2025, GOV.UK: controlled drugs licences, GOV.UK: taking medicine in or out of the UK, CDC: travelling abroad with medicine
If you're staying a month or more
- Rabies: the NHS and TravelHealthPro recommend the vaccine for stays of over a month in countries where it's a risk. It doesn't replace urgent treatment after a bite, but it makes that treatment simpler.
- Japanese encephalitis: the CDC recommends the vaccine for stays in Thailand of a month or more.
- Chikungunya: in the US, the CDC says the Vimkunya vaccine can be considered for stays of 6 months or more in areas of higher risk.
Sources: NHS: rabies vaccination, August 2026, TravelHealthPro: rabies, CDC Yellow Book: Thailand, CDC: chikungunya vaccines, January 2026
Dengue and chikungunya vaccines
- Dengue (UK): the Qdenga vaccine is only advised for people aged 4 and over who have had dengue before.
- Dengue (US): Dengvaxia is no longer available, and the CDC says Qdenga is not available or recommended in the US.
- Chikungunya (US): the FDA suspended the licence for Ixchiq on 22 August 2025. Vimkunya is available for people aged 12 and over.
- Chikungunya (UK): the MHRA revoked the UK licence for Ixchiq in October 2026. Vimkunya is licensed for people aged 12 and over. Ask a travel clinic whether it's right for you.
- For all of these, the best protection is avoiding mosquito bites, day and night.
Sources: TravelHealthPro: Qdenga, CDC: dengue vaccine, September 2026, FDA: Ixchiq, August 2025, TravelHealthPro: chikungunya, October 2026
Once you're there: doctors, pharmacies and the numbers to call in each city, and insurance that covers you abroad.
Portugal
Lisbon- All travellers
- Routine vaccines up to date.
- Most travellers
- Tetanus.
- Some travellers
- Rabies, for people at higher risk from bats (bats can carry a rabies-like virus; rabies itself hasn't been reported).
- Yellow fever certificate
- No certificate needed.
- Bringing medicines
- UK prescriptions aren't recognised in Portugal. Keep medicines in the original container with the label, and bring enough for your stay. For a repeat prescription, go to a health centre; you may have to pay.
Worth knowing
- Dengue is a risk on Madeira: avoid mosquito bites there, especially in the day.
- A hepatitis A outbreak, mainly in the north and the Lisbon area (June 2025).
Sources: TravelHealthPro: Portugal (UK advice), CDC: Portugal (US advice), FCDO: Portugal health, August 2026, TravelHealthPro: Madeira
Spain
Barcelona, Las Palmas- All travellers
- Routine vaccines up to date.
- Most travellers
- Tetanus.
- Some travellers
- Rabies, for some higher-risk groups. The same advice covers the Canary Islands.
- Yellow fever certificate
- No certificate needed.
- Bringing medicines
- Some medicines prescribed or bought in the UK are regulated differently in Spain. GOV.UK gives no specific limits.
Worth knowing
- West Nile virus: 104 locally caught cases in 2026, as of September. There's no vaccine; avoid mosquito bites.
- Crimean-Congo haemorrhagic fever, which spreads through tick bites: four local cases in 2026 by August.
Sources: TravelHealthPro: Spain (UK advice), CDC: Spain (US advice), FCDO: Spain health, August 2026
Hungary
Budapest- All travellers
- Routine vaccines up to date.
- Most travellers
- Tetanus.
- Some travellers
- Rabies, for people at higher risk from wild animals; tick-borne encephalitis, for people whose activities put them at risk, including time in forests and parks.
- Yellow fever certificate
- No certificate needed.
- Bringing medicines
- Hungary has strict rules on some medicines coming in, and you must declare anything that may be prohibited. Hungary's customs service has the details.
Worth knowing
- A hepatitis A outbreak, mostly in and around Budapest: 641 suspected cases from January to May 2025.
- West Nile virus: five locally caught cases in 2026, as of September.
Sources: TravelHealthPro: Hungary (UK advice), CDC: Hungary (US advice), FCDO: Hungary entry requirements, August 2026
Greece
Athens- All travellers
- Routine vaccines up to date.
- Most travellers
- Tetanus.
- Some travellers
- Rabies, mainly for people at higher risk such as those working with bats.
- Malaria
- TravelHealthPro reported two probable locally caught cases in rural Central Greece in September 2025, with no more found.
- Yellow fever certificate
- No certificate needed.
- Bringing medicines
- Carry a letter from your doctor stating the quantity you need for your stay, and your prescription. The name on the prescription must match your passport. For controlled medicines, contact Greece's Organisation Against Drugs (OKANA).
Worth knowing
- West Nile virus: 319 locally caught cases in 2026, as of September. There's no vaccine; avoid mosquito bites.
Sources: TravelHealthPro: Greece (UK advice), CDC: Greece (US advice), FCDO: Greece health, August 2026
Malta
Valletta- All travellers
- Routine vaccines up to date.
- Most travellers
- Tetanus.
- Some travellers
- Rabies, for people whose work or activities expose them to bats.
- Yellow fever certificate
- Only if you arrive from a country with yellow fever, or spend over 12 hours in transit at one of its airports (age 9 months and over).
- Bringing medicines
- UK prescriptions aren't recognised in Malta, and local brands may differ. You may need to see a Maltese doctor for a local prescription.
Worth knowing
- Malta's first cases of mpox clade I were reported in August 2026.
Sources: TravelHealthPro: Malta (UK advice), CDC: Malta (US advice), FCDO: Malta health, August 2026, FCDO: Malta entry requirements
Croatia
Split- All travellers
- Routine vaccines up to date.
- Most travellers
- Tetanus.
- Some travellers
- Hepatitis A, for people whose activities or health put them at higher risk; rabies, for people at higher risk from animals; tick-borne encephalitis, for people visiting the inland counties TravelHealthPro names whose activities put them at risk, mainly from spring to autumn.
- Yellow fever certificate
- No certificate needed.
- Bringing medicines
- Some medicines prescribed or bought in the UK are regulated differently in Croatia. GOV.UK gives no specific limits.
Worth knowing
- West Nile virus: 15 locally caught cases in 2026, as of September.
Sources: TravelHealthPro: Croatia (UK advice), CDC: Croatia (US advice), FCDO: Croatia health, August 2026
Georgia
Tbilisi- All travellers
- Routine vaccines up to date.
- Most travellers
- Hepatitis A, tetanus and typhoid.
- Some travellers
- Hepatitis B, including for long stays; rabies, including for stays of over a month; measles (make sure you're up to date); BCG for some groups.
- Malaria
- None. The WHO declared Georgia malaria-free in January 2025.
- Yellow fever certificate
- No certificate needed.
- Bringing medicines
- Very strict. Some common UK medicines are banned, including codeine products you can buy without a prescription in the UK, and foreigners have been detained even with a prescription. Bring the prescription and original packaging, and check in advance with Georgia's medicines agency, which takes about a month.
Worth knowing
- Rabies treatment is available in Tbilisi and major towns. Get help straight away after any dog bite or scratch.
- You need health insurance worth at least 30,000 lari for your whole stay to enter.
Sources: TravelHealthPro: Georgia (UK advice), CDC: Georgia (US advice), FCDO: Georgia entry requirements, September 2026, FCDO: Georgia health, September 2026
United Arab Emirates
Dubai- All travellers
- Routine vaccines up to date.
- Most travellers
- Tetanus.
- Some travellers
- Hepatitis A, hepatitis B, rabies and typhoid, for people at higher risk; early MMR for infants.
- Malaria
- None, according to the CDC.
- Yellow fever certificate
- Only if you arrive from a country with yellow fever, or spend over 12 hours in transit at one of its airports (age 9 months and over).
- Bringing medicines
- Some UK prescription and over-the-counter medicines count as controlled in the UAE, and you must get approval in advance from the UAE authorities to bring them. Applications take about 5 working days. Carry the prescription for whatever you bring.
Worth knowing
- MERS has been reported in the UAE: avoid contact with camels and raw camel milk.
- Dengue is a risk.
Sources: TravelHealthPro: United Arab Emirates (UK advice), CDC: United Arab Emirates (US advice), FCDO: UAE health, July 2026, UAE Ministry of Health: medicine permits, UAE Embassy (US): prescription drugs, CDC: malaria by country
South Africa
Cape Town- All travellers
- Routine vaccines up to date.
- Most travellers
- Hepatitis A, tetanus and typhoid.
- Some travellers
- Cholera, hepatitis B, rabies (including stays of over a month and water sports on the Cape coast), measles for infants, and BCG for children staying over 3 months.
- Malaria
- None in Cape Town, according to the CDC. The risk is in low-lying parts of Mpumalanga and Limpopo, including Kruger National Park, and the far north-east of KwaZulu-Natal, mainly from September to May.
- Yellow fever certificate
- Only if you arrive from a country with yellow fever, or spend over 12 hours in transit at one of its airports (age 1 and over). Without it you can be refused entry.
- Bringing medicines
- Its medicines regulator allows up to a month's supply for personal use, with a prescription and a certificate from the prescriber (a 2011 guideline). Most UK prescription medicines need a South African doctor's prescription to buy there.
- US advice
- The CDC recommends typhoid for most travellers, and says to consider rabies vaccine if you'll spend time in rural areas.
Worth knowing
- Rabies has become established in Cape fur seals along the Northern, Western and Eastern Cape coasts, with over 100 cases in South Africa and Namibia since 2024. Keep away from seals.
Sources: TravelHealthPro: South Africa (UK advice), CDC: South Africa (US advice), CDC Yellow Book: South Africa, April 2025, FCDO: South Africa health, July 2026, SAHPRA: importing medicines (2011)
Thailand
Bangkok, Chiang Mai- All travellers
- Routine vaccines up to date.
- Most travellers
- Hepatitis A and tetanus.
- Some travellers
- Hepatitis B; Japanese encephalitis (for stays of a month or more in the season); rabies (including stays of over a month); typhoid; measles; chikungunya and dengue for some people; BCG for some groups.
- Malaria
- None in Bangkok or Chiang Mai, according to TravelHealthPro. Low risk in rural, forested border areas with Cambodia, Laos and Myanmar.
- Yellow fever certificate
- Only if you arrive from a country with yellow fever, or spend over 12 hours in transit at one of its airports (age 9 months and over).
- Bringing medicines
- Bring no more than 30 days' supply, in the original containers, with a doctor's letter or prescription. Some controlled medicines need a permit from Thailand's FDA: apply online at least 2 weeks ahead.
- US advice
- The CDC recommends Japanese encephalitis vaccine for stays of a month or more, plus hepatitis A, hepatitis B and typhoid.
Worth knowing
- Chikungunya cases roughly doubled in 2025, with the most in the north, especially Chiang Mai.
- Dengue: 51,795 cases in 2025 to October.
- Rabies: seven deaths by early July 2025, three times as many as the same period in 2024, and an alert in parts of Bangkok in September 2025.
Sources: TravelHealthPro: Thailand (UK advice), CDC: Thailand (US advice), CDC Yellow Book: Thailand, April 2025, Royal Thai Embassy: bringing medicines, March 2024
Malaysia
Kuala Lumpur- All travellers
- Routine vaccines up to date.
- Most travellers
- Hepatitis A and tetanus.
- Some travellers
- Hepatitis B; Japanese encephalitis for longer stays; rabies (including stays of over a month); typhoid; measles; chikungunya and dengue for some people; BCG for some groups.
- Malaria
- Low risk in mainland Malaysia, according to TravelHealthPro. The CDC says none in Kuala Lumpur.
- Yellow fever certificate
- Only if you arrive from a country with yellow fever, or spend over 12 hours in transit at one of its airports (age 1 and over).
- Bringing medicines
- Up to one month's supply, with a prescription in English (or translated) and the original packaging. Staying longer and need ongoing medicine? Malaysia's health ministry says to see a doctor there. Controlled medicines need a prescription or doctor's letter and some must be declared.
Worth knowing
- Dengue: 56,319 cases in 2026, as of August.
Sources: TravelHealthPro: Malaysia (UK advice), CDC: Malaysia (US advice), Malaysia Ministry of Health: bringing medicines (2019), CDC: malaria by country
Indonesia
Bali- All travellers
- Routine vaccines up to date.
- Most travellers
- Hepatitis A, tetanus and typhoid.
- Some travellers
- Hepatitis B; Japanese encephalitis; rabies; measles; chikungunya and dengue for some people; BCG for some groups.
- Malaria
- Low risk on Bali, according to TravelHealthPro; the CDC says none in Bali's resort areas. The high-risk area is Papua.
- Yellow fever certificate
- Only if you arrive from a country with yellow fever (age 9 months and over).
- Bringing medicines
- The customs declaration asks whether you're carrying narcotic or psychotropic medicines; saying yes sends you to the red channel. Before you travel, you must also fill in the online All Indonesia customs and health declaration, in the 72 hours before you arrive. We found no official limit on quantities.
Worth knowing
- Zika: 11 cases in travellers reported in France between July 2025 and March 2026 were mostly linked to Bali and nearby islands, and the UK reported four cases linked to Indonesia in 2026.
- There are many street dogs on Bali, and monkeys around temples. Get help straight away after any bite or scratch.
Sources: TravelHealthPro: Indonesia (UK advice), CDC: Indonesia (US advice), FCDO: Indonesia entry requirements, September 2026, FCDO: Indonesia health, September 2026, Indonesian customs: passenger declaration (2018), CDC: malaria by country
Japan
Tokyo- All travellers
- Routine vaccines up to date.
- Most travellers
- Tetanus.
- Some travellers
- Hepatitis B; Japanese encephalitis (not routinely for short trips to Tokyo or major cities); tick-borne encephalitis for some areas; rabies (bat lyssavirus) for some activities; dengue for some people.
- Malaria
- None, according to the CDC.
- Yellow fever certificate
- No certificate needed.
- Bringing medicines
- Very strict. Up to a month's supply of ordinary prescription medicine needs no paperwork; more needs an import certificate (Yunyu Kakunin-sho) arranged online before you go. Narcotics such as codeine, and stimulant ingredients such as pseudoephedrine (in some cold medicines), need permission before you travel whatever the amount: apply at least 14 days ahead. Adderall is banned even with a prescription. GOV.UK says Vicks inhalers are among the medicines that are illegal to carry.
Worth knowing
- Measles: 498 cases in 2026, as of May. Make sure you're up to date.
- Whooping cough: a big rise in 2025.
Sources: TravelHealthPro: Japan (UK advice), CDC: Japan (US advice), Japan Ministry of Health: bringing medicines, Japan Narcotics Control Department, FCDO: Japan health, August 2026
Mexico
Mexico City- All travellers
- Routine vaccines up to date.
- Most travellers
- Hepatitis A, tetanus and typhoid.
- Some travellers
- Rabies (including stays of over a month); measles; chikungunya and dengue for some people.
- Malaria
- Very low risk. The CDC says there's none in Mexico City.
- Yellow fever certificate
- No certificate needed.
- Bringing medicines
- Prescriptions from outside Mexico must be translated into Spanish, and pharmacies may still refuse them. The US State Department says pseudoephedrine (in Sudafed) is illegal in Mexico.
- US advice
- The CDC recommends hepatitis A and typhoid, and hepatitis B for stays of 6 months or more.
Worth knowing
- Measles in Mexico (May 2026), and dengue, which is commonest in towns and cities.
- Mexico City is at 2,350m, so you may feel the altitude at first.
Sources: TravelHealthPro: Mexico (UK advice), CDC: Mexico (US advice), CDC Yellow Book: Mexico, FCDO: Mexico health, October 2026, State Department: Mexico, August 2026
Colombia
Medellín- All travellers
- Routine vaccines up to date.
- Most travellers
- Hepatitis A, tetanus and typhoid.
- Some travellers
- Yellow fever (see below); rabies (including stays of over a month); chikungunya and dengue for some people; BCG for some groups.
- Malaria
- Low risk in rural areas below 1,600m, very low above that. TravelHealthPro doesn't name Medellín.
- Yellow fever certificate
- A certificate is needed if you arrive from Angola, Brazil, DR Congo or Uganda, or spend over 12 hours in transit at an airport in one of them (age 1 and over). Colombia declared a yellow fever health emergency in April 2025, and cases continued in 2026: records may be checked inside the country, including at some national parks, so carry your certificate. TravelHealthPro says the vaccine is generally not needed for a trip only to Medellín, but is recommended for areas below 2,300m.
- Bringing medicines
- Prescriptions must be in Spanish, using generic names. Keep medicines in the original container. You're responsible for checking a medicine is legal in Colombia.
Worth knowing
- Yellow fever: 56 cases and 28 deaths in 2026 as of July, mostly in Tolima. The CDC has a level 2 notice.
- Oropouche, a virus spread by biting midges, is circulating.
Sources: TravelHealthPro: Colombia (UK advice), CDC: Colombia (US advice), FCDO: Colombia entry requirements, October 2026, FCDO: Colombia health, October 2026, CDC: yellow fever in Colombia, September 2025, Colombia Ministry of Health: Resolución 691 de 2025
Argentina
Buenos Aires- All travellers
- Routine vaccines up to date.
- Most travellers
- Hepatitis A and tetanus.
- Some travellers
- Yellow fever, only for Corrientes and Misiones (including Iguazú Falls); rabies (including stays of over a month); typhoid; chikungunya and dengue for some people.
- Malaria
- None. The WHO declared Argentina malaria-free in 2019.
- Yellow fever certificate
- No certificate needed to enter, but you may need one for onward travel to some countries.
- Bringing medicines
- Carry medicines in their original packaging, with your doctor's prescription, in an amount that fits your stay.
Worth knowing
- Dengue is a risk in Buenos Aires and the provinces north of it.
- Hantavirus: a CDC notice in May 2026, though the risk to most travellers is extremely low.
Sources: TravelHealthPro: Argentina (UK advice), CDC: Argentina (US advice), FCDO: Argentina entry requirements, May 2026, State Department: Argentina, July 2026
Brazil
Florianópolis- All travellers
- Routine vaccines up to date.
- Most travellers
- Hepatitis A, tetanus and typhoid.
- Some travellers
- Yellow fever (see below); hepatitis B (including long stays); rabies (including stays of over a month); chikungunya and dengue for some people; BCG for some groups.
- Malaria
- Very low risk outside the Amazon basin, according to TravelHealthPro; the CDC says there's no known transmission in Santa Catarina, the state Florianópolis is in.
- Yellow fever certificate
- No certificate needed to enter. But both the UK and the CDC recommend the vaccine for Santa Catarina, which includes Florianópolis, and some neighbouring countries, including Colombia, ask for a certificate if you've been in Brazil.
- Bringing medicines
- Bring a prescription or a letter from your doctor, and enough for your whole stay: some medicines aren't available, and counterfeit medicines are a problem.
- US advice
- The CDC recommends yellow fever vaccine for Santa Catarina, at least 10 days before you travel.
Worth knowing
- Big outbreaks of dengue and chikungunya in 2025.
- Yellow fever: 15 cases in 2026 as of July, most in São Paulo state.
Sources: TravelHealthPro: Brazil (UK advice), CDC: Brazil (US advice), CDC Yellow Book: Brazil, FCDO: Brazil health, September 2026, TravelHealthPro: Colombia
Costa Rica
Santa Teresa- All travellers
- Routine vaccines up to date.
- Most travellers
- Hepatitis A and tetanus.
- Some travellers
- Rabies (including stays of over a month); typhoid; chikungunya and dengue for some people.
- Malaria
- Low risk in Limón Province, very low in the rest of the country.
- Yellow fever certificate
- Only if you arrive from a country with yellow fever, or from Rwanda, Tanzania or Zambia (age 9 months and over). Arrivals from Argentina and Panama are exempt, and so are transit passengers who stay in the airport's international area.
- Bringing medicines
- UK prescriptions can't be used in Costa Rica. Bring enough for your whole stay, in the original packaging, with a copy of the prescription: some medicines aren't sold there and can't be posted in.
Worth knowing
- Chikungunya on the Guanacaste coast, north of Santa Teresa, in July 2026.
- If you become a resident, Costa Rica requires a yellow fever jab at least 10 days before you fly to Colombia, Brazil, Peru, African countries and some others, with exemptions such as people over 60.
Sources: TravelHealthPro: Costa Rica (UK advice), CDC: Costa Rica (US advice), FCDO: Costa Rica health, May 2026, State Department: Costa Rica, September 2026, Costa Rica Ministry of Health, February 2026