Health
Use safe food and water practices; avoid untreated freshwater swimming. Cambodia is hot and humid, so plan for hydration, sun protection, and rest in peak heat. Mosquito-borne risks include dengue, Zika, chikungunya, Japanese encephalitis, and malaria in some rural/forested areas; risk is negligible in Phnom Penh, Siem Reap, and Angkor Wat. Altitude is not a typical visitor issue.
Vaccinations
Consult a doctor or travel clinic at least a month before travel. Be up to date on routine vaccines, including MMR, polio, Tdap, flu, shingles where applicable, and COVID-19. CDC recommends hepatitis A and typhoid for many travelers, hepatitis B for unvaccinated travelers, and considers Japanese encephalitis or rabies vaccine based on itinerary and exposure risk. Yellow fever vaccine is not recommended for Cambodia itself, but a certificate is required for travelers age 1+ arriving from or transiting more than 12 hours through a yellow-fever-risk country.
eSIM / connectivity
eSIM is available from major local networks, but device compatibility and registration rules matter. Cellcard advertises eSIM purchase via its app or stores and has a Traveller SIM category; Smart advertises Smart eSIM and Smart Traveller SIM. Metfone is also a major Cambodian carrier, but travelers should verify current eSIM availability before arrival. Physical SIMs remain easy to find at airports, official shops, and reseller stores.
Health/vaccine info is reference only, not medical advice — consult a doctor or travel clinic; defer to CDC/WHO and official sources (as of 2026-06-20).