Dengue Fever
Dengue Fever is a viral infection transmitted by the bite of infected Aedes mosquitoes, causing epidemics worldwide, especially in countries with hot and humid climates like Thailand.
In Thailand, dengue fever is one of the most prevalent infectious diseases, especially during the rainy season. The disease can occur in both rural and urban areas and affects all age groups, including children and adults.
Dengue fever is caused by any one of four types of dengue viruses. Should you have had dengue fever in the past, you still can be infected again by the other virus types. In addition, previous infection with dengue fever increases your risk of severe symptoms if you get dengue fever again.
Dengue vaccine
The dengue vaccine is one method to prevent dengue fever. The dengue vaccine helps the body’s immune system to develop immunity against the dengue virus.
Who should get the vaccine?
- Those aged 4 years and older at the time of the first vaccine dose.
- Individuals residing in areas with dengue fever outbreaks.
- People traveling to areas with dengue outbreaks.
- It’s recommended for those who have been previously infected with dengue to get vaccinated to prevent more severe infections in subsequent encounters.
Precautions:
- Avoid administering this vaccine to pregnant women or those breastfeeding.
- For those who have recovered from dengue, it is recommended to wait at least 6 months before receiving the dengue vaccine. After infection, the body will have immunity against the disease, which decreases over time. Vaccination during a period of high immunity might reduce the vaccine’s efficacy.
Side effects of the dengue vaccine:
The dengue vaccine is safe. The majority of side effects from the dengue vaccine are usually mild and temporary, such as pain or swelling at the injection site, slight fever, or feeling fatigued. These symptoms typically improve within one or two days.
Where to get the Dengue Fever vaccine?
- It’s a new-generation vaccine.
- Only 2 injections required (with a 3-month gap).
- Suitable for aged 4 years and older.
- It can be administered to both individuals who have had dengue fever before and those who haven’t.
- Protection against all 4 strains of dengue fever is up to 80.2%.
- Reduces hospitalization and disease severity is up to 90.4%

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