Japanese Encephalitis is caused by the Japanese encephalitis virus (Japanese encephalitis) This disease is prevalent in Asia and is transmitted by Culex mosquitoes. Most people infected with the Japanese encephalitis virus show no symptoms, but in severe cases, it can be fatal.
Did you know? Japanese Encephalitis… can be life-threatening
In cases with symptoms, it usually involves severe brain symptoms with inflammation of the brain tissue, causing high fever, lethargy, seizures, unconsciousness, and possibly death. Even if the patient survives, brain disabilities often remain. There is no specific treatment for this disease, but it can be prevented with the Japanese encephalitis vaccine, which is commonly a live attenuated vaccine used today.
Who “should” get the Japanese Encephalitis vaccine
- All Thai children must receive 2 doses of the vaccine
- First dose at 9-12 months of age
- Second dose 3-24 months after the first dose (depending on the type of vaccine)
- People living in endemic areas who have never been vaccinated before, receiving 1 dose if over 18 years old
- Travelers over 1 year old who will enter countries where the disease is prevalent and stay for more than 1 month
Who “should avoid” receiving the Japanese Encephalitis vaccine
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- Those who have had a severe allergic reaction to the Japanese encephalitis vaccine before
- Allergic to gelatin
- Immunocompromised individuals
- Pregnant women
- Those who have had seizures within the past year may receive the vaccine if clearly indicated but must consult a doctor first
- If having a fever or acute illness, vaccination should be postponed until recovery
- Those with mild cold symptoms without fever can receive the vaccine
Possible side effects after receiving the Japanese Encephalitis vaccine
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- Severe allergic reactions may occur but are very rare. Most people who receive the Japanese encephalitis vaccine have no problems.
- Common reactions after vaccination include pain, swelling, redness, and itching at the injection site. Other symptoms such as low-grade fever, headache, fatigue, and hives may occur but are usually mild and resolve within 1-2 days.
- If there is pain or swelling at the injection site, apply a cold compress. If there is a low-grade fever, antipyretics can be taken. If any other abnormal symptoms occur, consult a doctor.
Note :
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- There is insufficient data regarding the use of this vaccine in breastfeeding women
- Women of childbearing age who receive the Japanese encephalitis vaccine should use contraception for at least 3 months after vaccination
- If in doubt, consult a doctor
