Side effects: The Japanese encephalitis vaccine may cause mild side effects such as soreness, redness or swelling at the injection site, headache, tiredness, muscle aches, mild fever, nausea, or generally feeling unwell.
Additional precautions: Seek urgent medical help if you develop symptoms such as a high fever, severe headache, confusion, seizures, weakness, neck stiffness, or changes in behaviour during travel or after returning home. The vaccine helps reduce the risk of Japanese encephalitis but does not replace mosquito bite prevention.
Risks caused by Japanese encephalitis: Japanese encephalitis is a rare but serious viral infection spread by infected mosquitoes in parts of Asia and the Western Pacific. Most people have mild or no symptoms, but serious cases can affect the brain and may lead to long-term complications or be life-threatening.