Doctor 24/7: How many doses of dengue vaccine are needed to be effective?

'My child is 14 years old this year. Can someone at this age get the dengue vaccine? If so, how many shots should he get? Thank you, doctor!' (B.Quyen, in Ho Chi Minh City).

Master - Doctor Le Thanh Khoi, Head of the Medical Council of the Long Chau Pharmacy System and Vaccination Center, said that the Center for Disease Control (CDC) recommends that the Qdenga vaccine to prevent dengue fever is indicated for 2 injections 3 months apart for children from 4 years old and adults, including those who have had dengue fever before.

Injection 1: The first injection, to activate the initial immune mechanism so that the body begins to produce antibodies against the 4 serotypes of the Dengue virus.

2nd dose: A booster dose is given at least 3 months after the first dose. This booster dose helps to strengthen and enhance the immune system, increasing protection against infection and reducing the risk of hospitalization or severe illness if infected with the virus.

Vaccination is a safe and effective solution

Photo: TTTC

Qdenga vaccine was developed to prevent dengue fever caused by dengue virus. It is a live attenuated vaccine that is more than 80% effective in preventing disease from all four serotypes of dengue virus: DEN-1, DEN-2, DEN-3 and DEN-4 and more than 90% effective in reducing the risk of hospitalization, severe disease and dangerous complications associated with dengue.

Some groups of people at high risk of severe disease progression should proactively get vaccinated, including:

• Children 4 years and older.
• Overweight or obese people.
• Elderly people with chronic diseases such as heart, kidney, liver, asthma, poorly controlled COPD, diabetes, hemolytic anemia...
• People who have had dengue fever before.

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Source: https://thanhnien.vn/bac-si-24-7-tiem-vac-xin-phong-sot-xuat-huyet-may-mui-moi-hieu-qua-18525101113110484.htm