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Vaccine-preventable
Japanese encephalitis

A viral disease transmitted to humans through the bite of an infected mosquito.

Symptoms

Most infections are mild (fever and headache) or without symptoms; about 1 in 250 cases progresses to severe illness (fever, headache, neck stiffness, disorientation, coma, seizures and spastic paralysis).

Incubation period

5 to 15 days.

Prevention

No mandatory vaccination; observe personal protection against mosquito bites. Use repellents, sleep under nets, and wear long sleeves and trousers.

Countries with travel guidance
23
Recommended
Myanmar
Myanmar

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Nepal
Nepal

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Bangladesh
Bangladesh

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Malaysia
Malaysia

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Sri Lanka
Sri Lanka

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Timor-Leste
Timor-Leste

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
India
India

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Philippines
Philippines

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
China
China

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
North Korea
North Korea

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Cambodia
Cambodia

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Brunei
Brunei

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Bhutan
Bhutan

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Pakistan
Pakistan

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Indonesia
Indonesia

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Papua New Guinea
Papua New Guinea

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Japan
Japan

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Singapore
Singapore

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
South Korea
South Korea

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Thailand
Thailand

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Laos
Laos

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Vietnam
Vietnam

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
Australia
Australia

Japanese encephalitis is present in this country. Follow the personal-protection precautions below.

Recommended
These are general requirements and may change. Consult a qualified doctor or travel clinic, and verify current entry rules before you travel.
Important medical disclaimer

Weqaey provides general health information only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider or travel clinic. In an emergency, contact local emergency services.

Informational only — not a substitute for professional medical advice.