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Travel health advice for the USA
Travel health advice for the USA should cover more than vaccinations. Visitors also need to understand healthcare costs, travel insurance, outdoor risks, emergency numbers and basic medical preparation before they travel.
The United States has modern hospitals, high clinical standards and reliable emergency services. However, medical treatment can cost far more than many international visitors expect. Therefore, preparation matters even for a short city break, road trip or family holiday.
Table of Contents
USA travel health advice at a glance
Most travellers do not need special vaccinations to visit the USA. However, you should stay up to date with routine vaccinations, carry suitable travel medical insurance and prepare for outdoor risks such as heat, sun exposure, mosquitoes and ticks.
- Check routine vaccinations before departure.
- Speak to a healthcare professional four to six weeks before travel if you have medical concerns.
- Take enough prescription medicine for your full trip.
- Buy travel medical insurance before you leave home.
- Dial 911 for a medical emergency in the United States.
- Drink tap water in most places, unless local advice says otherwise.
- Use sun protection, insect repellent and tick checks during outdoor activities.
Do I need vaccinations for the USA?
Most tourists do not need mandatory vaccinations to enter the United States. However, entry rules and airline requirements can change, so check official advice before you travel.
The CDC recommends that international travellers stay protected against vaccine-preventable diseases such as measles. In addition, travellers should review their routine vaccinations before any international journey.
The previous COVID-19 vaccination requirement for many noncitizen nonimmigrant travellers ended on 12 May 2023. Therefore, visitors should avoid relying on older travel advice that still lists COVID-19 proof of vaccination as a standard entry requirement.
Recommended vaccinations for travellers
Recommended vaccinations depend on your age, medical history, destination, season and planned activities. As a result, you should ask a doctor, nurse or travel clinic for personalised advice before departure.
Commonly reviewed vaccines for visitors to the USA include:
- Measles, mumps and rubella (MMR): Important for travellers who lack full protection against measles.
- Tetanus, diphtheria and polio: Routine boosters may need updating before travel.
- Influenza: Useful during flu season, especially for older travellers and people with health conditions.
- COVID-19: Still worth discussing with your healthcare provider, particularly if you have a higher risk of severe illness.
- Chickenpox: Relevant for travellers who have not had chickenpox or the vaccine.
- Hepatitis A and hepatitis B: Your clinician may recommend these vaccines depending on your personal risk and wider travel plans.
Additionally, bring a copy of your vaccination history if you plan to study, work, attend a long programme or join a summer camp in the USA. Some institutions set their own health documentation rules.
Recommended article: International vaccination chart
Health risks in the USA
The USA has a relatively low risk of many tropical diseases. However, travellers can still face seasonal illness, extreme weather, foodborne illness, road injuries and outdoor health risks.
Tick-borne diseases occur in several states, especially after time in woodland, grassland or rural areas. Lyme disease risk is higher in parts of the Northeast, mid-Atlantic and Upper Midwest. Therefore, hikers, campers and road-trippers should use repellent and check skin and clothing after outdoor activities.
Mosquito-borne illnesses can also occur in warmer months. West Nile virus appears in several regions, while other mosquito-related risks vary by location and season. As a result, insect-bite prevention remains useful even in a highly developed country.
Heat can create serious health risks in desert regions, southern states and cities during summer. In addition, wildfire smoke may affect air quality in parts of the western USA and Canada-border regions during wildfire season.
Taking prescription medicines to the USA
If you take prescription medication, bring enough to last for your entire trip and carry it in your hand luggage whenever possible. Although the United States allows travellers to bring many prescription medicines for personal use, some drugs face additional restrictions and documentation requirements.
How should I pack prescription medicines for travel?
Keep all medicines in their original pharmacy-labelled packaging and carry a copy of your prescription or a letter from your doctor. This information can help explain why you need the medication if customs officials ask questions or if you require medical treatment during your stay.
Additionally, you should pack essential medicines in your cabin baggage rather than checked luggage whenever possible. This reduces the risk of being left without medication if baggage is delayed or lost.
What documents should I carry for my medication?
A copy of your prescription, a doctor’s letter and details of your medical condition can help if you need medical assistance while travelling. Furthermore, these documents may be useful if security staff, airline personnel or customs officers ask about your medication.
If your prescription uses a brand name that differs from the name used in the United States, include the generic drug name in your documentation where possible.
Are there restrictions on certain medicines in the USA?
Some medicines that are available without a prescription in other countries may require a prescription in the United States. Likewise, certain drugs that are legal abroad may face restrictions under US federal or state laws.
Therefore, check the latest requirements before departure if you take strong painkillers, ADHD medications, sedatives, sleeping tablets or other controlled substances. Travellers should always ensure that any medication they carry is for personal use and supported by appropriate documentation.
Can I take insulin, syringes and medical devices to the USA?
Yes. Travellers can usually bring insulin, syringes, EpiPens, CPAP machines and other medically necessary devices into the United States. However, you should carry a doctor’s letter and keep medical equipment easily accessible during your journey.
Additionally, inform airport security staff if you are carrying injectable medication or medical devices that require special handling.
What if I need more medication while I am in the USA?
If you need to refill a prescription during your trip, visit a pharmacy or healthcare provider as early as possible. However, foreign prescriptions may not always be accepted directly by US pharmacies, so obtaining a local prescription could be necessary.
Major pharmacy chains operate throughout the country and can often help direct travellers to suitable healthcare services if additional medical advice is required.
Travel tip: Carry prescription medicines, medical documents and a small supply of essential over-the-counter medicines in your cabin baggage. Lost or delayed luggage can make it difficult to replace important medication quickly.
How to stay safe outdoors in the USA
The United States offers national parks, beaches, deserts, mountains, forests and large wilderness areas. However, conditions can change quickly, so plan carefully before hiking, camping, skiing, swimming or taking a long road trip.
- Prevent insect bites: Use repellent, wear long sleeves in high-risk areas and stay aware at dawn and dusk.
- Check for ticks: Inspect your body, clothing and bags after time in wooded or grassy places.
- Stay hydrated: Carry more water than you think you need, especially in hot states such as Arizona, Nevada, Texas and Florida.
- Protect your skin: Use high-factor sunscreen, wear a hat and seek shade during the strongest sun.
- Respect wildlife: Keep a safe distance from bears, bison, snakes, raccoons and other wild animals.
- Follow local warnings: Check signs for rip currents, extreme heat, wildfire risk, snow conditions and trail closures.
Moreover, remote areas can have limited mobile signal and long emergency response times. Tell someone your route before you explore isolated parks, trails or desert roads.
Food, water and everyday health tips
Tap water is generally safe to drink in the United States. However, you should follow local advice after floods, hurricanes, wildfires or water system problems.
Food hygiene standards are generally high, although foodborne illness can still happen. Therefore, wash your hands regularly, choose busy food outlets, keep chilled foods cold and take extra care with buffets, picnics and long car journeys.
Long-haul flights to the USA can also increase the risk of dehydration and deep vein thrombosis. During your journey, drink water, move regularly and consider flight socks if a healthcare professional recommends them.
Healthcare in the USA for tourists
The USA has excellent hospitals, urgent care centres, pharmacies and specialist clinics. However, tourists usually need to pay for treatment unless their travel insurance covers the cost.
For non-life-threatening problems, urgent care centres often cost less than hospital emergency rooms. In addition, many pharmacies can help with minor health issues and over-the-counter medicines.
If you take prescription medicine, bring enough for your stay and keep it in original packaging. Also carry a copy of your prescription or a doctor’s letter, especially for controlled medicines, injections or specialist equipment.
Typical healthcare costs in the USA
Healthcare in the United States can be significantly more expensive than in many other countries. Therefore, comprehensive travel medical insurance is strongly recommended before you travel.
| Treatment or Service | Typical Cost (USD) | Notes |
|---|---|---|
| Ambulance transport | $500–$2,500+ | Costs vary by location, distance travelled and treatment provided. |
| Emergency room visit | $1,000–$5,000+ | Charges increase if tests, scans or specialist treatment are required. |
| Hospital stay | $2,000–$10,000+ per day | Private rooms, surgery and intensive care can cost substantially more. |
| Urgent care centre consultation | $100–$300+ | Often a more affordable option for minor illnesses and injuries. |
| Doctor or GP consultation | $100–$300+ | Fees vary depending on the clinic, city and type of appointment. |
| X-ray | $100–$1,000+ | Prices vary between healthcare providers. |
| MRI scan | $500–$5,000+ | One of the more expensive diagnostic procedures. |
| Prescription medication | Varies widely | Costs depend on the medication, dosage and insurance coverage. |
| Minor fracture treatment | $2,500–$15,000+ | Costs depend on scans, treatment and follow-up care. |
| Appendicitis surgery | $15,000–$50,000+ | Emergency surgery and hospitalisation can be extremely expensive. |
Important: These figures are approximate and can vary significantly between states, hospitals and healthcare providers. Additionally, costs may rise substantially if specialist treatment, surgery or extended hospital stays are required.
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The importance of travel medical insurance for the USA
Travel medical insurance for the USA is strongly recommended because healthcare costs can be very high. Even a short hospital visit, ambulance journey or emergency procedure can create a large bill.
A good policy should cover emergency medical treatment, hospital care, repatriation, trip interruption and pre-existing medical conditions where declared and accepted. In addition, check the excess, exclusions and activity limits before you buy.
Anothertravel.com has teamed up with SafetyWing to offer travel medical insurance 
that provides peace of mind by covering any unexpected medical expenses you may face while exploring the country.
Emergency medical help in the USA
Dial 911 anywhere in the United States for emergency medical help, police or fire services. Operators can send an ambulance when a situation requires urgent medical support.
Additionally, keep your travel insurance emergency assistance number, policy details and emergency contact information saved offline. This simple step can save time during a stressful situation.
FAQs: About USA travel health advice
Travellers can generally bring medication for personal use, but restrictions may apply to certain controlled medicines. Keep prescription medicine in its original labelled packaging and carry supporting documentation, such as a copy of your prescription or a letter from your doctor. Check US rules before travelling if you take controlled medication.
For non-emergency treatment, you can visit an urgent care centre, walk-in clinic or doctor. Contact your travel insurer before treatment when possible, as it may direct you to an approved medical provider. For a life-threatening emergency, call 911 or go to the nearest emergency department.
Yes. Keep your policy number, insurer’s emergency telephone number and any relevant medical information somewhere you can access easily. Saving digital copies on your phone and keeping a separate backup can also help if your belongings are lost or stolen.
Yes. Pharmacies sell many common over-the-counter medicines for problems such as pain, allergies, colds and minor digestive complaints. However, brand names, ingredients and permitted doses may differ from those in your home country, while prescription-only medicines normally require a prescription that is valid in the United States.
Food packaging commonly includes allergen information, although restaurant preparation practices can vary. Tell restaurant staff clearly about serious allergies and ask about ingredients and cross-contact. Additionally, carry any prescribed emergency medication with you rather than leaving it at your accommodation.
Tick exposure varies considerably by region, season and habitat. Travellers hiking, camping or spending time in wooded or grassy areas should use suitable insect repellent, avoid dense vegetation where practical and check their skin and clothing for ticks afterwards.
Altitude sickness can affect travellers visiting high-elevation destinations, particularly in mountainous parts of states such as Colorado, Wyoming and California. Ascend gradually where possible, stay hydrated and avoid strenuous activity immediately after arriving at a much higher elevation. Seek medical advice if symptoms become severe or worsen.
Temperatures can become dangerously high in desert and southern regions, particularly during summer. Therefore, check local weather warnings, carry sufficient water, limit strenuous outdoor activity during the hottest part of the day and never remain inside a parked vehicle during hot weather.
Yes. Wildfire smoke can reduce air quality across large areas, sometimes far from an active fire. Travellers with respiratory or cardiovascular concerns should pay particular attention to local air-quality alerts and follow advice from health and emergency authorities when smoke levels rise.
Food hygiene standards are generally high, but foodborne illness can still occur. Choose reputable food outlets, refrigerate perishable food promptly and take extra care with raw or undercooked meat, seafood and eggs. Additionally, follow local health warnings if authorities announce a food recall or outbreak.
A routine pre-travel appointment may not be necessary for every visitor. However, consider speaking to a healthcare professional several weeks before departure if you have an existing medical condition, take regular medication, need vaccinations or plan activities that could create additional health risks.
Travellers with significant medical conditions should consider carrying details of their diagnosis, medicines, allergies and emergency contacts. Furthermore, keeping this information accessible on your phone and carrying a physical copy can help healthcare professionals if you need unexpected treatment.
Before you travel to the USA
Before departure, check official health guidance, review your travel insurance and prepare your medicines. Also confirm the latest entry rules through your airline, the CDC, CBP or the nearest US embassy or consulate.
For wider trip planning, read related guides on USA visa requirements, travel insurance, international emergency phone numbers, deep vein thrombosis, food and water safety abroad and the full travel guide to the USA.
By staying informed and prepared, you can minimise your health risks and fully enjoy your time in the United States without unnecessary concerns.
Medical disclaimer: This guide provides general travel health information and does not replace professional medical advice. Always consult a doctor, travel clinic or healthcare professional before travelling.
Author
Michael Harper
Michael Harper is the North America travel editor for anothertravel.com, specialising in travel guides, road trips, luxury escapes, and outdoor adventures across the USA, Canada, and Mexico. Drawing on years of first-hand travel experience throughout destinations including California, New York, British Columbia, and the Mexican Caribbean, he creates experience-led content that combines local insight with practical travel planning advice. His expertise includes city breaks, national parks, coastal travel, scenic driving routes, and family-friendly destinations, helping travellers discover both iconic attractions and lesser-known experiences across North America.
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