Health & Vaccinations
There are no mandatory vaccinations for Mexico (except yellow fever if arriving from a yellow fever area). Recommended are:
- Hepatitis A & B
- Typhoid (for longer stays or rural areas)
- Rabies (for adventure trips or animal contact)
- Tetanus/Diphtheria/Polio (booster)
Dengue Fever & Malaria
Dengue is a risk in coastal regions (especially during the rainy season). Transmitted by Aedes mosquitoes (active during the day!). Use mosquito spray (DEET 30%+) and wear long clothing in the morning/evening. Malaria is only present in remote rural areas (Chiapas, Oaxaca coast) — prophylaxis is usually not necessary for tourists.
Traveler's Diarrhea (Montezuma's Revenge)
The infamous “Montezuma's Revenge” affects many first-time visitors. The cause is usually not the food, but the unfamiliar bacterial flora. Tips:
- NEVER drink tap water (→ see Drinking Water section)
- Ice in good restaurants is okay (industrially produced)
- Street food at busy stalls (high turnover = fresh) is safe
- Bring Imodium and electrolytes
- Start slowly — the stomach adjusts within a week
Altitude Sickness
Mexico City is at 2,240 m. Upon arrival from lowlands, headaches, dizziness, and shortness of breath may occur. On the first day: drink plenty of water, avoid alcohol, and exertion. Symptoms usually disappear after 1–2 days.
