Moderate riskAmericas · Central AmericaMexico Travel Health Guide
Moderate risk
Mexico carries a CDC Level 1 travel health notice. Malaria risk exists in certain areas of Mexico. Key travel vaccines: COVID-19, Hepatitis A, Hepatitis B.
Compiled by Voyax Health from CDC Travelers' Health: Mexico. Editorial sections reviewed by Voyax Health pharmacists ·
Overall risk
Moderate risk
Malaria
Present
Best time to visit
November to April is dry and cooler. Hurricane season runs June to November on both coasts, and dengue rises with the rains.
Travel health in Mexico
Mexico is the most visited destination from California and, for most trips, the health prep is straightforward: routine vaccines up to date, hepatitis A, and a plan for travelers' diarrhea, which affects a large share of visitors within the first week. The picture changes with the itinerary. Mexico City sits at 7,350 ft, high enough to leave many arrivals breathless for a day or two. Dengue is present across the coasts and the south, peaking in the rainy season. Malaria pills are only needed for a few southern and rural areas; the resort corridors of Cancún, Los Cabos and Puerto Vallarta are not among them.
Recommended vaccines
Routine Vaccines
Ensure all routine vaccinations are up to date before travel
COVID-19
Stay up to date with COVID-19 vaccines before travel
Hepatitis A
Hepatitis A vaccine recommended for all travelers 1 year and older. Infants 6-11 months should also be vaccinated
Hepatitis B
Hepatitis B vaccine recommended for unvaccinated travelers under 60. Those 60+ may consider vaccination
Measles
Measles cases rising worldwide. All travelers should be fully vaccinated with MMR vaccine at least 2 weeks before travel
Typhoid
Typhoid vaccine recommended for most travelers, especially those staying with friends/relatives or visiting smaller cities or rural areas
Chikungunya
Chikungunya vaccine may be considered for extended stays of 6 months or longer due to elevated risk in Mexico
Rabies
Rabies pre-exposure vaccination may be considered based on planned activities and access to medical care. Rabies vaccines are typically available throughout Mexico
Yellow Fever
Yellow fever vaccine is not recommended and not required for entry to Mexico
Disease risks
Malaria
Malaria risk exists in certain areas of Mexico. Prophylaxis recommended for Campeche, Chiapas, and southern Chihuahua. Low risk in Oaxaca, Sinaloa, Sonora, and Tabasco where only mosquito precautions are needed. No risk along US-Mexico border.
Altitude Sickness
Cities >2,000m (e.g., Mexico City 2,250m); lower threshold but risk for some; hydrate well.
Traveler's Diarrhea
Rural Chiapas, Oaxaca; low risk in Mexico City, Cancún.
Malaria risk
Malaria risk is limited to certain areas. Whether you need antimalarial medication depends on your itinerary — see details.
Malaria risk exists in certain areas of Mexico. Prophylaxis recommended for Campeche, Chiapas, and southern Chihuahua. Low risk in Oaxaca, Sinaloa, Sonora, and Tabasco where only mosquito precautions are needed. No risk along US-Mexico border.
Seasonal timing
When health risks peak through the year — plan around them.
Peak
June to November
Dengue
Rainy-season peak on the Pacific and Gulf coasts, the Yucatán and Chiapas. Daytime repellent matters as much as evening.
Peak
Year-round, higher in summer heat
Travelers' diarrhea
The single most common problem for visitors. Carry oral rehydration salts and, for longer or remote trips, a standby antibiotic.
Peak
April to September
Heat illness
Inland and Yucatán temperatures regularly exceed 100 °F; pace outdoor sightseeing and hydrate with salted fluids.
Water & food safety
Water
Do not drink tap water anywhere, including in hotels; use sealed bottled or purified water for drinking and brushing teeth. Ice in established restaurants and hotels is almost always made from purified water. Rural and beach areas are the higher-risk settings.
Food
Street food is part of the trip; choose stalls that cook to order in front of you and are busy with locals. Skip raw salads, unpeeled fruit you did not wash yourself, and unpasteurized dairy. Ceviche and aguachile are raw preparations; treat them as a considered risk, not a default.
Medications
Pharmacies are everywhere and stock most common medications, often at lower prices than in the US. Antibiotics have required a prescription since 2010, and controlled medications are tightly regulated, so carry your own psychiatric, ADHD and pain prescriptions in original packaging with a copy of the prescription.
On the ground
Medical facilities
Private hospitals in Mexico City, Guadalajara, Monterrey, Cancún and Los Cabos meet international standards and many accept US insurance for a deposit. Public facilities and rural clinics are basic. Medical evacuation to the US is common for serious illness and is not cheap without insurance.
Travel insurance
Most US health plans, including Medicare, do not cover care in Mexico. Buy a travel medical policy with evacuation cover; it is inexpensive for short trips.
Emergency numbers
Police
911
Medical / Ambulance
911
Fire
911
Tourist Police
078
U.S. Embassy
+52-55-5080-2000
Mexico travel health FAQ
Do I need malaria pills for Cancún, Cabo or Puerto Vallarta?▼
No. There is no malaria risk in the main resort areas or in Mexico City. Prophylaxis is advised only for parts of Chiapas, Campeche and a few other southern or rural areas. Dengue, spread by day-biting mosquitoes, is the real concern on the coasts, so pack repellent.
Is it safe to eat street food in Mexico?▼
Usually, if you choose well: busy stalls, food cooked hot to order, and nothing that has been sitting out. Most cases of travelers' diarrhea come from lukewarm buffets, raw produce and untreated water rather than a sizzling taco.
Can I bring my ADHD or anxiety medication into Mexico?▼
Personal-use quantities of prescribed medication are generally allowed in original packaging with a copy of the prescription. Some stimulants and opioids are controlled in Mexico and can be questioned at the border; declaring them with documentation avoids problems. Voyax Health's medication screening flags anything that needs extra paperwork.
Will I get altitude sickness in Mexico City?▼
Mild symptoms such as headache, poor sleep and breathlessness on stairs are common in the first 24 to 48 hours at 7,350 ft. Take the first day slowly, limit alcohol, and hydrate. Acetazolamide is rarely needed at this altitude but can help travellers who have struggled before.
More country guides
BelizeModerate riskBelize carries a CDC Level 1 travel health notice. Malaria risk exists in some parts of Belize. Key travel vaccines: COVID-19, Hepatitis A, Hepatitis B.
Costa RicaModerate riskCosta Rica carries a CDC Level 1 travel health notice. Malaria risk exists in Alajuela and Limón provinces. Key travel vaccines: COVID-19, Hepatitis A, Hepatitis B. Yellow fever vaccine is not needed for travel to Costa Rica, but is required if arriving from countries with yellow fever risk
El SalvadorLow riskEl Salvador carries a CDC Level 1 travel health notice. No malaria risk. Key travel vaccines: COVID-19, Hepatitis A, Hepatitis B. Yellow fever vaccine is not needed for protection in El Salvador, but is required if you're coming from a country with yellow fever risk, including airport layovers over 12 hours.
Plan your Mexico trip
Get vaccines, prescriptions and a personalized health plan for Mexico — matched to your itinerary and travelers.
Build my Trip KitSources: CDC Travelers' Health: Mexico · WHO International Travel and Health. Last updated 2026-07-31. Health conditions and entry rules change — verify with the CDC, WHO and your destination’s authorities before travel. This page is informational and not a substitute for advice from a travel-medicine provider.