Japanese Encephalitis Vaccine Singapore

What Is Japanese Encephalitis?

Japanese encephalitis (JE) is a viral infection transmitted through mosquito bites that can lead to inflammation of the brain.

It is caused by a flavivirus and is endemic in various parts of Asia, including Southeast Asia, with outbreaks also reported in other regions.

Japanese Encephalitis Symptoms

In the majority of cases, individuals infected with JE do not exhibit symptoms. When symptoms develop, they can be severe and may include fever, headaches, nausea, seizures, and confusion.

These signs typically emerge in about 1 in 250 infected individuals. Around 30% to 50% of those who survive may suffer from long-term neurological issues such as vision or hearing impairment, speech difficulties, memory loss, seizures, or weakness in the limbs.

In more serious cases, the illness may progress to coma or even result in death.

Japanese Encephalitis Prevention

Minimising exposure to mosquitoes is key to preventing JE. Some practical tips include:

• Wearing long-sleeved, permethrin-treated clothing
• Applying insect repellent to exposed skin
• Using mosquito nets, particularly during evening and nighttime hours

For those travelling to or living in areas where JE is common, vaccination is the most reliable preventive measure.

What Precautions Should I Take Prior to a Japanese Encephalitis Immunisation?

Before receiving the vaccine, inform your doctor if you:

• Have allergies to vaccine components or experienced previous adverse reactions
• Are currently pregnant or breastfeeding
• Have a weakened immune system or are undergoing treatments like chemotherapy or prolonged high-dose steroid use

Japanese Encephalitis Vaccine Side Effects

Most side effects of the JE vaccine are mild and temporary. Common reactions include:

• Pain or redness at the injection site
• Dizziness or fatigue
• Low-grade fever
• Headaches
• Flu-like symptoms

If side effects persist or worsen, it is advisable to consult your doctor.

Rare But Serious Reactions to Watch For

Although uncommon, some individuals may experience severe allergic responses. Symptoms to look out for include:

• Swelling of the face or eyes
• Difficulty breathing
• Generalised itchy rash

Seek immediate medical attention if any of these signs occur after vaccination.

Disclaimer: This overview does not cover all possible side effects or medical considerations. Always consult a qualified healthcare professional for medical advice before receiving any vaccination.

How Do I Book a Japanese Encephalitis Vaccination Appointment?

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