Japan Travel Health: Staying Well on Your Trip
Japan is one of the world’s safest and most hygienic travel destinations. Food safety standards are extremely high, tap water is safe to drink everywhere, and medical facilities are excellent in urban areas. However, travelers should be prepared for a few Japan-specific health considerations. This guide covers the key health information for visitors.
Editorial note: This guide provides general travel health information for visitors to Japan. It does not constitute medical advice. Consult a travel health clinic or your own doctor before traveling for personalized recommendations.
Vaccinations for Japan
Japan has no mandatory vaccination requirements for entry. Standard travel health recommendations from most countries include being up to date on routine vaccinations and considering the following:
- Routine vaccinations: Ensure measles-mumps-rubella (MMR), diphtheria-tetanus-pertussis, and influenza vaccines are current before travel.
- Hepatitis A: Recommended for most travelers to Japan by many travel health authorities (including the US CDC). Transmission is rare given Japan’s food safety standards, but the vaccine provides long-term protection.
- Hepatitis B: Consider if you may have medical procedures, tattooing, or extended stays in Japan.
- Japanese Encephalitis: This mosquito-borne viral encephalitis occurs in rural agricultural areas of Japan (particularly rice-growing regions) from May to October. Vaccination is generally recommended only for travelers spending extended time (4+ weeks) in rural areas during mosquito season. City-based travel carries minimal risk.
- COVID-19: Japan recommends being up to date on COVID-19 vaccinations but has no entry requirements as of 2024. Check current requirements before travel.
Always consult a travel health clinic or your GP for current, personalized vaccination advice before your trip.
Food and Water Safety
Japan has excellent food safety standards. Traveler’s diarrhea is uncommon. Key points:
- Tap water: Safe to drink everywhere in Japan. Japan’s tap water quality is excellent; many Japanese prefer it to bottled water.
- Raw food: Raw fish (sashimi, sushi) is widely consumed and generally very safe in Japan due to strict handling standards. The risk of food-borne illness from raw seafood is low but not zero; travelers with compromised immune systems should exercise caution.
- Fugu (puffer fish): Prepared by licensed chefs and extremely safe in Japan; poisoning incidents are very rare and almost always from improper home preparation.
Mosquitoes and Insects
- Mosquitoes are present in Japan from June to October. They are more of a nuisance than a significant disease risk for most city travelers. Long sleeves and DEET-based repellent are useful for evening outdoor activities.
- Japanese encephalitis mosquitoes are most active at dusk and dawn in rural areas. Dengue fever outbreaks have occasionally occurred in Japan (rare, mostly in Okinawa and limited parts of Honshu) — check current advisories.
- Haemaphysalis ticks are present in forested and mountain areas. Long pants tucked into socks and insect repellent are sensible precautions for mountain hiking, particularly from spring to autumn.
- The giant Asian hornet (Suzumebachi) is potentially deadly to those with allergies and present in forested areas across Japan. Carry an EpiPen if you have known insect sting allergies and be cautious around any large hornet nests in forest areas.
Heat and Sun
Japanese summers (July-August) are extremely hot and humid, especially in Tokyo, Osaka, and Kyoto. Heatstroke (netsu-chu-sho) is a real risk and thousands of Japanese are hospitalized for heat-related illness each summer.
- Drink water regularly; Japan’s convenience stores and vending machines make staying hydrated easy.
- Seek shade or air conditioning during peak afternoon heat (2-4pm) in summer.
- Wear a hat and use high-SPF sunscreen; UV intensity in Japan is high in summer.
- Sports drink powder sachets (OS-1, Pocari Sweat) are effective electrolyte replenishment for heat exhaustion.
Altitude Sickness
Mt Fuji (3,776 m) and some Japanese Alps peaks are high enough to cause altitude sickness in susceptible individuals. Symptoms (headache, nausea, dizziness) typically appear above 2,500 m. Acclimatize gradually, stay well hydrated, and descend if symptoms are severe. Altitude medication (acetazolamide) can be prescribed by a doctor before travel.
Medical Care in Japan
- Japan has excellent healthcare. Major cities have hospitals with international patient services and English-speaking staff.
- International clinics: Tokyo has several English-language clinics (Tokyo Medical and Surgical Clinic, International Clinic, Hiroo Clinic). Kyoto and Osaka have similar options. The AMDA International Medical Information Center (03-5285-8088 in Tokyo) can refer callers to appropriate facilities in multiple languages.
- Pharmacies (Yakkyoku): Matsumoto Kiyoshi, Tsuruha, and other chains are found throughout Japan. Staff may not speak English, but showing a photo of your medication or its generic name helps.
- Travel insurance: Essential for Japan. Medical costs for uninsured foreigners can be extremely high. Ensure your policy covers emergency evacuation and hospital treatment.
- Emergency numbers: Police 110, Ambulance/Fire 119. Both are understood to have some English capability in major cities, but response speed in English varies.
Medications and Controlled Substances
Japan has strict regulations on controlled medications. Some medications legal in other countries are prohibited in Japan (including certain stimulants, codeine-containing cough medicines, and some ADHD medications). Check the Japanese Ministry of Health, Labour and Welfare’s approved medication list before travel if you take prescription medications. For controlled medications, obtain a certificate from your doctor in advance and check the import procedure with the Japanese Embassy.